81129664 (number)

81129664 is an even 8-digits composite number following 81129663 and preceding 81129665. In scientific notation, it is written as 8.1129664 × 10^7. The sum of its digits is 37. It has a total of 10 prime factors and 112 positive divisors. There are 31104000 positive integers (up to 81129664) that are relatively prime to 81129664.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-nine thousand six hundred sixty-four

Notation

Scientific notation 8.1129664 × 10^7
Engineering notation 8.1129664 × 10^6

Prime Factorization of 81129664

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 101 × 163

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 2535302
Product of the distinct prime numbers

The prime factorization of 81129664 is 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 101 × 163. Since it has a total of 10 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81129664)

Multiplication

n×y
n×2 162259328
n×3 243388992
n×4 324518656
n×5 405648320

Division

n÷y
n÷2 40564832
n÷3 27043221.333333
n÷3 20282416
n÷5 16225932.8

Exponentiation

ny
n2 6582022380752896
n3 5.3399726419096E+23
n4 4.3323018620732E+31
n5 3.5147819441657E+39

Nth Root

y√n
2√n 9007.2006750155
3√n 432.90562189489
4√n 94.906273106763
5√n 38.180001003167

Divisors of 81129664

112 divisors

τ Total Divisors 112
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81129663
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0089285714285714
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 112
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81129664 can be divided by 112 positive divisors. The sum of these divisors (counting 81129664) is 1, the average is 0.0089285714285714.

Base conversion 81129664

Base System Value
2 Binary 100110101011111000011000000
3 Ternary 12122122210222101
4 Quaternary 10311133003000
5 Quinary 131232122124
6 Senary 12014520144
8 Octal 465370300
10 Decimal 81129664
12 Duodecimal 23206054
16 Hexadecimal 4d5f0c0
20 Vigesimal 1571434
36 Base36 1caw1s

Cryptographic Hash Functions

md5 09369170130ecfb10f941ac5898520e2
sha1 c0a7c2d1c0f4a319d15125900c7f1ce201c962d7
sha256 613f9076ce9a4cca15326b29afc8afa5e3adf0afca4b1a5ab723b8ad1df00417
sha512 78e7c17baaa4f6e406a680ad0dc8dedb2b21cc0cf3030d1df018b389cd1e2bdfb0769b6700918ca1eaabe553d1a771a0eb1f0e5d9e9550bdfbfaf898f28f6b57
ripemd-160 a4727cebc4e189c82cf112c0ed9d7e074e4d4ad4

81129664 as geometric shapes

Circle

Radius = n
Diameter 162259328
Circumference 509752712.82122
Area 2.0678033157137E+16

Sphere

Radius = n
Volume 2.2368025096258E+24
Surface area 8.2712132628548E+16
Circumference 509752712.82122

Square

Length = n
Perimeter 324518656
Area 6582022380752896
Diagonal 114734671.13957

Cube

Length = n
Surface area 39492134284517376
Volume 5.3399726419096E+23
Space diagonal 140520700.04899

Equilateral Triangle

Length = n
Perimeter 243388992
Area 2.8500992950049E+15
Altitude 70260350.024496

Triangular Pyramid

Length = n
Surface area 2.8500992950049E+15
Volume 6.2932181107416E+22
Height 38244890.379857