81072585 (number)

81072585 is an odd 8-digits composite number following 81072584 and preceding 81072586. In scientific notation, it is written as 8.1072585 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 37593600 positive integers (up to 81072585) that are relatively prime to 81072585.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1072585 × 10^7
Engineering notation 8.1072585 × 10^6

Prime Factorization of 81072585

Prime Factorization 15 × 33 × 23 × 7121

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81072585
Product of the distinct prime numbers

The prime factorization of 81072585 is 15 × 33 × 23 × 7121. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 5, 59, 74, 273, 302, 6177, 7767, 96409, 9993, 729854, 103029, 3770862, 2409757, 22849513, 81121658, 999699946, 166297155, 3955679348, 7368036462

Basic calculations (n = 81072585)

Multiplication

n×y
n×2 162145170
n×3 243217755
n×4 324290340
n×5 405362925

Division

n÷y
n÷2 40536292.5
n÷3 27024195
n÷3 20268146.25
n÷5 16214517

Exponentiation

ny
n2 6572764038582225
n3 5.328709712029E+23
n4 4.320122710688E+31
n5 3.5024351567268E+39

Nth Root

y√n
2√n 9004.0315970125
3√n 432.80407409298
4√n 94.889575807949
5√n 38.174627161533

Divisors of 81072585

1, 15, 23, 33, 345, 495, 759, 7121, 11385, 106815, 163783, 234993, 2456745, 3524895, 5404839, 81072585

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81072584
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81072585 can be divided by 16 positive divisors. The sum of these divisors (counting 81072585) is 1, the average is 0.0625.

Base conversion 81072585

Base System Value
2 Binary 100110101010001000111001001
3 Ternary 12122112220200100
4 Quaternary 10311101013021
5 Quinary 131223310320
6 Senary 12013400013
8 Octal 465210711
10 Decimal 81072585
12 Duodecimal 23199009
16 Hexadecimal 4d511c9
20 Vigesimal 156e195
36 Base36 1c9o09

Cryptographic Hash Functions

md5 d0aa31267c86bfd1c3fe2dd8ce2f9a93
sha1 33ac0ed092c1858d15fc5f3ff568161b0ded2bb8
sha256 5dd1af5e2d4d9dc3da2ff76e9c84949f6ac654ec3532254731cb56d51f6b0f33
sha512 387d30be6ffcf9b9c61c48f0982607ccbb20c4d9932dbca88c44331add31550a10c9a59567d0ebd743508c433ad2e26b159d6e3ea21695fc0de1fd072a88726d
ripemd-160 1fe5c40bf1b9d9f98eba898e4e19d495ca10b298

81072585 as geometric shapes

Circle

Radius = n
Diameter 162145170
Circumference 509394074.88707
Area 2.0648947217389E+16

Sphere

Radius = n
Volume 2.2320847045897E+24
Surface area 8.2595788869556E+16
Circumference 509394074.88707

Square

Length = n
Perimeter 324290340
Area 6572764038582225
Diagonal 114653949.24365

Cube

Length = n
Surface area 39436584231493350
Volume 5.328709712029E+23
Space diagonal 140421836.32095

Equilateral Triangle

Length = n
Perimeter 243217755
Area 2.8460903152465E+15
Altitude 70210918.160473

Triangular Pyramid

Length = n
Surface area 2.8460903152465E+15
Volume 6.2799446205839E+22
Height 38217983.081215