28928 (number)
28,928 (twentyeight thousand nine hundred twentyeight) is an even fivedigits composite number following 28927 and preceding 28929. In scientific notation, it is written as 2.8928 × 10^{4}. The sum of its digits is 29. It has a total of 9 prime factors and 18 positive divisors. There are 14,336 positive integers (up to 28928) that are relatively prime to 28928.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 5
 Sum of Digits 29
 Digital Root 2
Name
Short name  28 thousand 928 

Full name  twentyeight thousand nine hundred twentyeight 
Notation
Scientific notation  2.8928 × 10^{4} 

Engineering notation  28.928 × 10^{3} 
Prime Factorization of 28928
Prime Factorization 2^{8} × 113
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  9  Total number of prime factors 
rad(n)  Radical  226  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 28,928 is 2^{8} × 113. Since it has a total of 9 prime factors, 28,928 is a composite number.
Divisors of 28928
18 divisors
τ(n)  Total Divisors  18  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  58254  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  29326  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  3236.333  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  170.08233300375  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  8.9385106602131  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 28,928 can be divided by 18 positive divisors (out of which 16 are even, and 2 are odd). The sum of these divisors (counting 28,928) is 58,254, the average is 32,36.,333.
Other Arithmetic Functions (n = 28928)
φ(n)  Euler Totient  14336  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  896  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3145  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  8  The number of ways n can be represented as the sum of 2 squares 
There are 14,336 positive integers (less than 28,928) that are coprime with 28,928. And there are approximately 3,145 prime numbers less than or equal to 28,928.
Divisibility of 28928
m  2  3  4  5  6  7  8  9 

n mod m  0  2  0  3  2  4  0  2 
The number 28,928 is divisible by 2, 4 and 8.
Classification of 28928
By Arithmetic functions
 Abundant
Expressible via specific sums
 Polite
 Practical
Other numbers
 Frugal
Base conversion (28928)
Base  System  Value 

2  Binary  111000100000000 
3  Ternary  1110200102 
4  Quaternary  13010000 
5  Quinary  1411203 
6  Senary  341532 
8  Octal  70400 
10  Decimal  28928 
12  Duodecimal  148a8 
16  Hexadecimal  7100 
20  Vigesimal  3c68 
36  Base36  mbk 
Basic calculations (n = 28928)
Multiplication
n×yn×2  57856 

n×3  86784 
n×4  115712 
n×5  144640 
Division
n÷yn÷2  14464.000 

n÷3  9642.666 
n÷4  7232.000 
n÷5  5785.600 
Exponentiation
n^{y}n^{2}  836829184 

n^{3}  24207794634752 
n^{4}  700283083194105856 
n^{5}  20257789030639094202368 
Nth Root
^{y}√n^{2}√n  170.08233300375 

^{3}√n  30.69772111524 
^{4}√n  13.041561754781 
^{5}√n  7.8030372789509 
28928 as geometric shapes
Circle
Radius = nDiameter  57856 

Circumference  181759.98456609 
Area  2628976416.7639 
Sphere
Radius = nVolume  1.0140137304553E+14 

Surface area  10515905667.056 
Circumference  181759.98456609 
Square
Length = nPerimeter  115712 

Area  836829184 
Diagonal  40910.369932329 
Cube
Length = nSurface area  5020975104 

Volume  24207794634752 
Space diagonal  50104.765761352 
Equilateral Triangle
Length = nPerimeter  86784 

Area  362357665.9861 
Altitude  25052.382880676 
Triangular Pyramid
Length = nSurface area  1449430663.9444 

Volume  2852915957300.7 
Height  23619.613093077 
Cryptographic Hash Functions
md5  6e92962008491b24a803ff3b7d61734b 

sha1  8fe81bf06688e591e89dae0b550c5743bb35627f 
sha256  24beb07f79d2eeb6f5a7cf9eaff4b01fca2ade6dae30f8ad834db06b9a46241d 
sha512  6dbbab071d5e0aeb0dcea6c787ada035df9f9c66d47f8c0774889de302659a631b22e42ac4f3b3152084603cde929345fbbbb444eefa1e9015d891951a0569da 
ripemd160  8ccca76c7e7b4f5a33a063ad4f71ece5bf2004ba 