81252020 (number)

81252020 is an even 8-digits composite number following 81252019 and preceding 81252021. In scientific notation, it is written as 8.1252020 × 10^7. The sum of its digits is 20. It has a total of 5 prime factors and 24 positive divisors. There are 32108576 positive integers (up to 81252020) that are relatively prime to 81252020.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred fifty-two thousand twenty

Notation

Scientific notation 8.1252020 × 10^7
Engineering notation 8.1252020 × 10^6

Prime Factorization of 81252020

Prime Factorization 2 × 2 × 5 × 83 × 48947

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40626010
Product of the distinct prime numbers

The prime factorization of 81252020 is 2 × 2 × 5 × 83 × 48947. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 9, 6, 70, 146, 260, 7091, 8736, 80693, 34549, 384751, 115989, 3528218, 8143099, 61825305, 49702647, 243990591, 408146052, 9296078427, 838192613

Basic calculations (n = 81252020)

Multiplication

n×y
n×2 162504040
n×3 243756060
n×4 325008080
n×5 406260100

Division

n÷y
n÷2 40626010
n÷3 27084006.666667
n÷3 20313005
n÷5 16250404

Exponentiation

ny
n2 6601890754080400
n3 5.3641695958836E+23
n4 4.3584961528812E+31
n5 3.5413661658383E+39

Nth Root

y√n
2√n 9013.9902374032
3√n 433.12314198018
4√n 94.942036197899
5√n 38.191510323809

Divisors of 81252020

1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 48947, 97894, 195788, 244735, 489470, 978940, 4062601, 8125202, 16250404, 20313005, 40626010, 81252020

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 -81252019
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 81252020 can be divided by 24 positive divisors. The sum of these divisors (counting 81252020) is 1, the average is 0.041666666666667.

Base conversion 81252020

Base System Value
2 Binary 100110101111100111010110100
3 Ternary 12122220000211002
4 Quaternary 10311330322310
5 Quinary 131300031040
6 Senary 12021302432
8 Octal 465747264
10 Decimal 81252020
12 Duodecimal 23264a18
16 Hexadecimal 4d7ceb4
20 Vigesimal 157ga10
36 Base36 1cdigk

Cryptographic Hash Functions

md5 541adaad215a10b3afdacfe4316288db
sha1 400ab3a1766ef1a6ed5327bf864b9794385287fa
sha256 3b95d278bdcfa16453c3773225b0e82609bc092c93009411c1eeef0d93922220
sha512 8703c17d81e136d530ad156b899b2c2c7e7e39f272f971ca8a30a2af977e677db1c5854d5a34b5e00a8d45843a99d1f6a9292f7a304ef7dcafe6b6684bf511d6
ripemd-160 30d3d6ed731b0333da80ceebaf0189a9240874bf

81252020 as geometric shapes

Circle

Radius = n
Diameter 162504040
Circumference 510521498.24266
Area 2.0740451492821E+16

Sphere

Radius = n
Volume 2.246938106005E+24
Surface area 8.2961805971285E+16
Circumference 510521498.24266

Square

Length = n
Perimeter 325008080
Area 6601890754080400
Diagonal 114907708.65421

Cube

Length = n
Surface area 39611344524482400
Volume 5.3641695958836E+23
Space diagonal 140732626.8576

Equilateral Triangle

Length = n
Perimeter 243756060
Area 2.8587025530216E+15
Altitude 70366313.428801

Triangular Pyramid

Length = n
Surface area 2.8587025530216E+15
Volume 6.3217344944733E+22
Height 38302569.551403