81572085 (number)

81572085 is an odd 8-digits composite number following 81572084 and preceding 81572086. In scientific notation, it is written as 8.1572085 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors. There are 37289952 positive integers (up to 81572085) that are relatively prime to 81572085.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred seventy-two thousand eighty-five

Notation

Scientific notation 8.1572085 × 10^7
Engineering notation 8.1572085 × 10^6

Prime Factorization of 81572085

Prime Factorization 7 × 5 × 3 × 3 × 258959

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 27190695
Product of the distinct prime numbers

The prime factorization of 81572085 is 7 × 5 × 3 × 3 × 258959. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 3, 10, 15, 114, 52, 5645, 9796, 85062, 44720, 218621, 117488, 6159776, 1239036, 97201630, 27284264, 829007387, 613338116, 9014073692, 1971027474

Basic calculations (n = 81572085)

Multiplication

n×y
n×2 163144170
n×3 244716255
n×4 326288340
n×5 407860425

Division

n÷y
n÷2 40786042.5
n÷3 27190695
n÷3 20393021.25
n÷5 16314417

Exponentiation

ny
n2 6654005051247225
n3 5.4278106563077E+23
n4 4.4275783222024E+31
n5 3.6116679524285E+39

Nth Root

y√n
2√n 9031.726579121
3√n 433.69111116297
4√n 95.035396453747
5√n 38.221551547606

Divisors of 81572085

1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 258959, 776877, 1294795, 1812713, 2330631, 3884385, 5438139, 9063565, 11653155, 16314417, 27190695, 81572085

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 -81572084
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 81572085 can be divided by 24 positive divisors. The sum of these divisors (counting 81572085) is 1, the average is 0.041666666666667.

Base conversion 81572085

Base System Value
2 Binary 100110111001011000011110101
3 Ternary 12200111021212100
4 Quaternary 10313023003311
5 Quinary 131340301320
6 Senary 12032212313
8 Octal 467130365
10 Decimal 81572085
12 Duodecimal 2339a099
16 Hexadecimal 4dcb0f5
20 Vigesimal 159ga45
36 Base36 1ckdf9

Cryptographic Hash Functions

md5 934d7f60c9ba6441248c498aa4b423f2
sha1 7798087cc6bbd5605548a28eba21431928fa48ee
sha256 36c555c66dfb1a831ddcf085c2b1dd193bc99699c03d2eb0b4c52816b3a55705
sha512 3e8129286cc083947133f64b29fd099949c882aad284aeba4d7642eb4d9185b6ec22fdd0273b2a82d080fabe455121b2aa1b21c357621c1c42b78081cd1d3993
ripemd-160 e43a9b17b350e727133b092a9499653fe6346819

81572085 as geometric shapes

Circle

Radius = n
Diameter 163144170
Circumference 512532525.948
Area 2.0904173385948E+16

Sphere

Radius = n
Volume 2.2735960110577E+24
Surface area 8.3616693543791E+16
Circumference 512532525.948

Square

Length = n
Perimeter 326288340
Area 6654005051247225
Diagonal 115360348.91805

Cube

Length = n
Surface area 39924030307483350
Volume 5.4278106563077E+23
Space diagonal 141286995.69933

Equilateral Triangle

Length = n
Perimeter 244716255
Area 2.881268705645E+15
Altitude 70643497.849664

Triangular Pyramid

Length = n
Surface area 2.881268705645E+15
Volume 6.3967362034529E+22
Height 38453449.63935