28931728 (number)

28931728 is an even 8-digits composite number following 28931727 and preceding 28931729. In scientific notation, it is written as 2.8931728 × 10^7. The sum of its digits is 40. It has a total of 6 prime factors and 20 positive divisors. There are 12399264 positive integers (up to 28931728) that are relatively prime to 28931728.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand seven hundred twenty-eight

Notation

Scientific notation 2.8931728 × 10^7
Engineering notation 2.8931728 × 10^6

Prime Factorization of 28931728

Prime Factorization 2 × 2 × 2 × 2 × 7 × 258319

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 3616466
Product of the distinct prime numbers

The prime factorization of 28931728 is 2 × 2 × 2 × 2 × 7 × 258319. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 7, 39, 19, 887, 210, 7889, 2381, 82057, 54766, 312486, 579668, 9024992, 8006189, 64604088, 39019595, 669060656, 216349696, 319532541, 5330847619

Basic calculations (n = 28931728)

Multiplication

n×y
n×2 57863456
n×3 86795184
n×4 115726912
n×5 144658640

Division

n÷y
n÷2 14465864
n÷3 9643909.3333333
n÷3 7232932
n÷5 5786345.6

Exponentiation

ny
n2 837044885065984
n3 2.421715493852E+22
n4 7.0064413961513E+29
n5 2.0270845672139E+37

Nth Root

y√n
2√n 5378.8221759043
3√n 306.99039747575
4√n 73.340453883954
5√n 31.065251552801

Divisors of 28931728

1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 258319, 516638, 1033276, 1808233, 2066552, 3616466, 4133104, 7232932, 14465864, 28931728

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28931727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28931728 can be divided by 20 positive divisors. The sum of these divisors (counting 28931728) is 1, the average is 0.05.

Base conversion 28931728

Base System Value
2 Binary 1101110010111011010010000
3 Ternary 2000102212212111
4 Quaternary 1232113122100
5 Quinary 24401303403
6 Senary 2512035104
8 Octal 156273220
10 Decimal 28931728
12 Duodecimal 9832a94
16 Hexadecimal 1b97690
20 Vigesimal 90g968
36 Base36 h83v4

Cryptographic Hash Functions

md5 dd22078d3c9a55d9679d433db63983d9
sha1 ea9b115aa55d0bdf6917a5fbd9d36484c043f831
sha256 10240ff9a3b29253af6a90fb2c40c4e119dc0066ed2dd886beef71ff8f40fa40
sha512 d9c24dbccbefacf68c7e44e8ae832d4b1b0afb8badef70b3deed9aeebf2ac311435acbccc93e55031c24b34af5b3cc0b17637f86ae8ff8c5609a679f3460ed2f
ripemd-160 4d76497c5faf42850a87e96a90192e247abcf2ce

28931728 as geometric shapes

Circle

Radius = n
Diameter 57863456
Circumference 181783408.28092
Area 2.6296540616482E+15

Sphere

Radius = n
Volume 1.0144058139427E+23
Surface area 1.0518616246593E+16
Circumference 181783408.28092

Square

Length = n
Perimeter 115726912
Area 837044885065984
Diagonal 40915642.120489

Cube

Length = n
Surface area 5022269310395904
Volume 2.421715493852E+22
Space diagonal 50111222.846763

Equilateral Triangle

Length = n
Perimeter 86795184
Area 3.6245106728748E+14
Altitude 25055611.423382

Triangular Pyramid

Length = n
Surface area 3.6245106728748E+14
Volume 2.8540190796788E+21
Height 13638547.373496