81572020 (number)

81572020 is an even 8-digits composite number following 81572019 and preceding 81572021. In scientific notation, it is written as 8.1572020 × 10^7. The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors. There are 32628800 positive integers (up to 81572020) that are relatively prime to 81572020.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1572020 × 10^7
Engineering notation 8.1572020 × 10^6

Prime Factorization of 81572020

Prime Factorization 2 × 2 × 5 × 4078601

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40786010
Product of the distinct prime numbers

The prime factorization of 81572020 is 2 × 2 × 5 × 4078601. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 67, 57, 30, 807, 1925, 5553, 45770, 70294, 201027, 967436, 6611604, 4388789, 47622241, 65942618, 730513507, 609083769, 2653180675, 8562267482

Basic calculations (n = 81572020)

Multiplication

n×y
n×2 163144040
n×3 244716060
n×4 326288080
n×5 407860100

Division

n÷y
n÷2 40786010
n÷3 27190673.333333
n÷3 20393005
n÷5 16314404

Exponentiation

ny
n2 6653994446880400
n3 5.4277976810082E+23
n4 4.4275642099115E+31
n5 3.6116535628219E+39

Nth Root

y√n
2√n 9031.7229806942
3√n 433.69099596862
4√n 95.035377521711
5√n 38.221545456302

Divisors of 81572020

1, 2, 4, 5, 10, 20, 4078601, 8157202, 16314404, 20393005, 40786010, 81572020

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81572019
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81572020 can be divided by 12 positive divisors. The sum of these divisors (counting 81572020) is 1, the average is 0.083333333333333.

Base conversion 81572020

Base System Value
2 Binary 100110111001011000010110100
3 Ternary 12200111021202221
4 Quaternary 10313023002310
5 Quinary 131340301040
6 Senary 12032212124
8 Octal 467130264
10 Decimal 81572020
12 Duodecimal 2339a044
16 Hexadecimal 4dcb0b4
20 Vigesimal 159ga10
36 Base36 1ckddg

Cryptographic Hash Functions

md5 695a638feb2315e7dd3a447dc73cd2fd
sha1 751bd5ee3a75f0f91458054e520c40ea4ddd1f2c
sha256 cb85e03a0a28a82c48d784cf266ae6eedb1a8c56c4b8227f162cbca9475efa57
sha512 b7b24e9bd3f7d1203612b467a9adacd842bb0ccfdb0c885c0fc9400e35c519aca9753cda7ab6f3672184d5b18d228e4c6513489c4bd0a8b0294bb141e5cf5456
ripemd-160 54b0763066c1b86a40bd2637ee2237be2e452657

81572020 as geometric shapes

Circle

Radius = n
Diameter 163144040
Circumference 512532117.54096
Area 2.0904140071347E+16

Sphere

Radius = n
Volume 2.2735905759769E+24
Surface area 8.3616560285387E+16
Circumference 512532117.54096

Square

Length = n
Perimeter 326288080
Area 6653994446880400
Diagonal 115360256.99417

Cube

Length = n
Surface area 39923966681282400
Volume 5.4277976810082E+23
Space diagonal 141286883.11602

Equilateral Triangle

Length = n
Perimeter 244716060
Area 2.8812641138195E+15
Altitude 70643441.558012

Triangular Pyramid

Length = n
Surface area 2.8812641138195E+15
Volume 6.3967209119158E+22
Height 38453418.998056