81129568 (number)

81129568 is an even 8-digits composite number following 81129567 and preceding 81129569. In scientific notation, it is written as 8.1129568 × 10^7. The sum of its digits is 40. It has a total of 7 prime factors and 24 positive divisors. There are 37444224 positive integers (up to 81129568) that are relatively prime to 81129568.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-nine thousand five hundred sixty-eight

Notation

Scientific notation 8.1129568 × 10^7
Engineering notation 8.1129568 × 10^6

Prime Factorization of 81129568

Prime Factorization 2 × 2 × 2 × 2 × 2 × 13 × 195023

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5070598
Product of the distinct prime numbers

The prime factorization of 81129568 is 2 × 2 × 2 × 2 × 2 × 13 × 195023. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 9, 43, 11, 406, 475, 520, 8091, 89124, 61206, 264922, 540691, 3742462, 4379603, 2623162, 87094207, 762091649, 836551758, 9491546753, 2506174548

Basic calculations (n = 81129568)

Multiplication

n×y
n×2 162259136
n×3 243388704
n×4 324518272
n×5 405647840

Division

n÷y
n÷2 40564784
n÷3 27043189.333333
n÷3 20282392
n÷5 16225913.6

Exponentiation

ny
n2 6582006803866624
n3 5.3399536857076E+23
n4 4.3322813566147E+31
n5 3.514761149166E+39

Nth Root

y√n
2√n 9007.1953459443
3√n 432.90545114372
4√n 94.906245031316
5√n 38.179991967553

Divisors of 81129568

1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 195023, 390046, 780092, 1560184, 2535299, 3120368, 5070598, 6240736, 10141196, 20282392, 40564784, 81129568

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81129567
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81129568 can be divided by 24 positive divisors. The sum of these divisors (counting 81129568) is 1, the average is 0.041666666666667.

Base conversion 81129568

Base System Value
2 Binary 100110101011111000001100000
3 Ternary 12122122210211211
4 Quaternary 10311133001200
5 Quinary 131232121233
6 Senary 12014515504
8 Octal 465370140
10 Decimal 81129568
12 Duodecimal 23205b94
16 Hexadecimal 4d5f060
20 Vigesimal 15713i8
36 Base36 1cavz4

Cryptographic Hash Functions

md5 5fa9992f72ddf8f07b06eb6d334b6163
sha1 d8531073e3d3e07fcd2ed74ef5a7fa9141d40946
sha256 5be919f494e15b2ce9de95d1c9bb1ecd0ae85b8542ab13b0989f33b45437d277
sha512 f2b1b55fff617029793f5182ad67c2f0bbdf447162e463d0bfbd078356898b50e4ac5141d7d3b6a36a2b511552d7c82fe28d93d334660c4d8c893d6b0af3c2a1
ripemd-160 1d9063885f9b8e83c9a6cd0bc9caef132f85529b

81129568 as geometric shapes

Circle

Radius = n
Diameter 162259136
Circumference 509752109.63543
Area 2.0677984220905E+16

Sphere

Radius = n
Volume 2.2367945692705E+24
Surface area 8.2711936883622E+16
Circumference 509752109.63543

Square

Length = n
Perimeter 324518272
Area 6582006803866624
Diagonal 114734535.37507

Cube

Length = n
Surface area 39492040823199744
Volume 5.3399536857076E+23
Space diagonal 140520533.77211

Equilateral Triangle

Length = n
Perimeter 243388704
Area 2.8500925500153E+15
Altitude 70260266.886057

Triangular Pyramid

Length = n
Surface area 2.8500925500153E+15
Volume 6.2931957706432E+22
Height 38244845.125023