28668728 (number)

28668728 is an even 8-digits composite number following 28668727 and preceding 28668729. In scientific notation, it is written as 2.8668728 × 10^7. The sum of its digits is 47. It has a total of 5 prime factors and 16 positive divisors. There are 13031200 positive integers (up to 28668728) that are relatively prime to 28668728.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred sixty-eight thousand seven hundred twenty-eight

Notation

Scientific notation 2.8668728 × 10^7
Engineering notation 2.8668728 × 10^6

Prime Factorization of 28668728

Prime Factorization 2 × 2 × 2 × 11 × 325781

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 7167182
Product of the distinct prime numbers

The prime factorization of 28668728 is 2 × 2 × 2 × 11 × 325781. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 1, 19, 26, 210, 152, 9942, 1482, 70967, 62562, 786356, 660057, 4193988, 8856702, 3996450, 97089373, 938103023, 109968304, 4071900711, 4045186234

Basic calculations (n = 28668728)

Multiplication

n×y
n×2 57337456
n×3 86006184
n×4 114674912
n×5 143343640

Division

n÷y
n÷2 14334364
n÷3 9556242.6666667
n÷3 7167182
n÷5 5733745.6

Exponentiation

ny
n2 821895965137984
n3 2.3562711868838E+22
n4 6.755129775101E+29
n5 1.9366097812707E+37

Nth Root

y√n
2√n 5354.3186307877
3√n 306.0573461094
4√n 73.173209788745
5√n 31.008566157911

Divisors of 28668728

1, 2, 4, 8, 11, 22, 44, 88, 325781, 651562, 1303124, 2606248, 3583591, 7167182, 14334364, 28668728

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28668727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28668728 can be divided by 16 positive divisors. The sum of these divisors (counting 28668728) is 1, the average is 0.0625.

Base conversion 28668728

Base System Value
2 Binary 1101101010111001100111000
3 Ternary 1222221112002202
4 Quaternary 1231113030320
5 Quinary 24314344403
6 Senary 2502245332
8 Octal 155271470
10 Decimal 28668728
12 Duodecimal 9726848
16 Hexadecimal 1b57338
20 Vigesimal 8j3bg8
36 Base36 h2gxk

Cryptographic Hash Functions

md5 598832a7ccae733e87bc85b85551ab43
sha1 52d1b11cd948c917553fc080b73a7bd324cf644f
sha256 f5fae2d3f5d239dce33af57a6f33c55e11e5c09c8a302694a1d94481f6120671
sha512 024181a49f530e9a30e89d9a9a394df41d4114eb5ea5815ae6e265095e1b71e0f7bc10abf0327b74486b418caa3bd48ff1870af672d71bcb020b66590ae97873
ripemd-160 1fe7dd099cf4af5dc03b36980538d7627c0ad30c

28668728 as geometric shapes

Circle

Radius = n
Diameter 57337456
Circumference 180130930.54513
Area 2.5820623260926E+15

Sphere

Radius = n
Volume 9.8699256674394E+22
Surface area 1.032824930437E+16
Circumference 180130930.54513

Square

Length = n
Perimeter 114674912
Area 821895965137984
Diagonal 40543703.953585

Cube

Length = n
Surface area 4931375790827904
Volume 2.3562711868838E+22
Space diagonal 49655693.484372

Equilateral Triangle

Length = n
Perimeter 86006184
Area 3.5589139253871E+14
Altitude 24827846.742186

Triangular Pyramid

Length = n
Surface area 3.5589139253871E+14
Volume 2.7768922242667E+21
Height 13514567.984528