81275520 (number)

81275520 is an even 8-digits composite number following 81275519 and preceding 81275521. In scientific notation, it is written as 8.1275520 × 10^7. The sum of its digits is 30. It has a total of 10 prime factors and 64 positive divisors. There are 21672960 positive integers (up to 81275520) that are relatively prime to 81275520.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1275520 × 10^7
Engineering notation 8.1275520 × 10^6

Prime Factorization of 81275520

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 42331

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 1269930
Product of the distinct prime numbers

The prime factorization of 81275520 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 42331. Since it has a total of 10 prime factors.

Most popular turbo-numbers

3, 7, 69, 91, 448, 690, 3834, 7642, 75397, 65579, 782120, 219904, 3845831, 685401, 45720203, 20449198, 784800400, 448096779, 2853320282, 9488368491

Basic calculations (n = 81275520)

Multiplication

n×y
n×2 162551040
n×3 243826560
n×4 325102080
n×5 406377600

Division

n÷y
n÷2 40637760
n÷3 27091840
n÷3 20318880
n÷5 16255104

Exponentiation

ny
n2 6605710151270400
n3 5.3688252751378E+23
n4 4.3635406602597E+31
n5 3.5464903620375E+39

Nth Root

y√n
2√n 9015.2936724213
3√n 433.16489443022
4√n 94.948900322338
5√n 38.193719245333

Divisors of 81275520

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 42331, 84662, 126993, 169324, 211655, 253986, 338648, 423310, 507972, 634965, 677296, 846620, 1015944, 1269930, 1354592, 1693240, 2031888, 2539860, 2709184, 3386480, 4063776, 5079720, 5418368, 6772960, 8127552, 10159440, 13545920, 16255104, 20318880, 27091840, 40637760, 81275520

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81275519
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81275520 can be divided by 64 positive divisors. The sum of these divisors (counting 81275520) is 1, the average is 0.015625.

Base conversion 81275520

Base System Value
2 Binary 100110110000010101010000000
3 Ternary 12122221020001110
4 Quaternary 10312002222000
5 Quinary 131301304040
6 Senary 12022003320
8 Octal 466025200
10 Decimal 81275520
12 Duodecimal 23276540
16 Hexadecimal 4d82a80
20 Vigesimal 157j8g0
36 Base36 1ce0lc

Cryptographic Hash Functions

md5 c98fdb250a418422c6042b1d513e6bfb
sha1 f99de98fe7b5cb3b3e7ef59d601d18c4e0699b69
sha256 de1b03996744b1e0e3a142237d8071439b16344c998d1de313be940c0dce7e00
sha512 94a091d8d207e5547226f0f13af32005d4785c7b5e6e8e3750ab6aa5b8778808637f131db95d3021b88a899cde4cb7ec018af5bd8a2e2689ebb73249d17f8b11
ripemd-160 37f1d524beb7d8c527979c2bafefc43e52354ef8

81275520 as geometric shapes

Circle

Radius = n
Diameter 162551040
Circumference 510669153.09738
Area 2.0752450482975E+16

Sphere

Radius = n
Volume 2.2488882723707E+24
Surface area 8.3009801931898E+16
Circumference 510669153.09738

Square

Length = n
Perimeter 325102080
Area 6605710151270400
Diagonal 114940942.67293

Cube

Length = n
Surface area 39634260907622400
Volume 5.3688252751378E+23
Space diagonal 140773330.05158

Equilateral Triangle

Length = n
Perimeter 243826560
Area 2.8603564005185E+15
Altitude 70386665.02579

Triangular Pyramid

Length = n
Surface area 2.8603564005185E+15
Volume 6.3272212650928E+22
Height 38313647.557642