81291232 (number)

81291232 is an even 8-digits composite number following 81291231 and preceding 81291233. In scientific notation, it is written as 8.1291232 × 10^7. The sum of its digits is 28. It has a total of 7 prime factors and 24 positive divisors. There are 36950400 positive integers (up to 81291232) that are relatively prime to 81291232.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand two hundred thirty-two

Notation

Scientific notation 8.1291232 × 10^7
Engineering notation 8.1291232 × 10^6

Prime Factorization of 81291232

Prime Factorization 2 × 2 × 2 × 2 × 2 × 11 × 230941

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5080702
Product of the distinct prime numbers

The prime factorization of 81291232 is 2 × 2 × 2 × 2 × 2 × 11 × 230941. Since it has a total of 7 prime factors.

Most popular turbo-numbers

6, 7, 24, 41, 922, 227, 7463, 476, 47322, 54373, 923072, 237167, 2826970, 8178964, 58603349, 30521158, 51439209, 171612484, 7835110431, 4418057711

Basic calculations (n = 81291232)

Multiplication

n×y
n×2 162582464
n×3 243873696
n×4 325164928
n×5 406456160

Division

n÷y
n÷2 40645616
n÷3 27097077.333333
n÷3 20322808
n÷5 16258246.4

Exponentiation

ny
n2 6608264400077824
n3 5.3719395446407E+23
n4 4.3669158381336E+31
n5 3.5499196852219E+39

Nth Root

y√n
2√n 9016.1650384185
3√n 433.19280545149
4√n 94.953488816465
5√n 38.195195835869

Divisors of 81291232

1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 352, 230941, 461882, 923764, 1847528, 2540351, 3695056, 5080702, 7390112, 10161404, 20322808, 40645616, 81291232

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 -81291231
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 81291232 can be divided by 24 positive divisors. The sum of these divisors (counting 81291232) is 1, the average is 0.041666666666667.

Base conversion 81291232

Base System Value
2 Binary 100110110000110011111100000
3 Ternary 12122222000121101
4 Quaternary 10312012133200
5 Quinary 131302304412
6 Senary 12022204144
8 Octal 466063740
10 Decimal 81291232
12 Duodecimal 23283654
16 Hexadecimal 4d867e0
20 Vigesimal 158181c
36 Base36 1cecps

Cryptographic Hash Functions

md5 23148e0f463936ff23f62abceea4f185
sha1 ede6eead4de3b45718a4a67e201c55fade264fb3
sha256 c50f6f985dac8a6ab0358964349b419a8d7f3d00f8eae4169c20747b07de8fc9
sha512 baf6c7bf456f0159dcd698e8affc301e5698b749edbdd4f3a25a5eb539a936200e02c414d27b754618a9ebf467c4384757df1ff210356940e6c98b9edaeca9f2
ripemd-160 d3c064f2cdd820fc50bbf2821f6ccec9f0d088b1

81291232 as geometric shapes

Circle

Radius = n
Diameter 162582464
Circumference 510767874.50493
Area 2.0760474892263E+16

Sphere

Radius = n
Volume 2.2501927745296E+24
Surface area 8.3041899569054E+16
Circumference 510767874.50493

Square

Length = n
Perimeter 325164928
Area 6608264400077824
Diagonal 114963162.79642

Cube

Length = n
Surface area 39649586400466944
Volume 5.3719395446407E+23
Space diagonal 140800544.03387

Equilateral Triangle

Length = n
Perimeter 243873696
Area 2.8614624226959E+15
Altitude 70400272.016934

Triangular Pyramid

Length = n
Surface area 2.8614624226959E+15
Volume 6.3308914668993E+22
Height 38321054.265473