81291260 (number)

81291260 is an even 8-digits composite number following 81291259 and preceding 81291261. In scientific notation, it is written as 8.1291260 × 10^7. The sum of its digits is 29. It has a total of 5 prime factors and 24 positive divisors. There are 32457600 positive integers (up to 81291260) that are relatively prime to 81291260.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand two hundred sixty

Notation

Scientific notation 8.1291260 × 10^7
Engineering notation 8.1291260 × 10^6

Prime Factorization of 81291260

Prime Factorization 2 × 2 × 5 × 601 × 6763

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40645630
Product of the distinct prime numbers

The prime factorization of 81291260 is 2 × 2 × 5 × 601 × 6763. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 4, 79, 90, 739, 817, 4557, 4856, 94399, 35903, 163917, 876192, 3009779, 4469303, 35860764, 64902504, 605088792, 369444581, 2821273372, 5546059514

Basic calculations (n = 81291260)

Multiplication

n×y
n×2 162582520
n×3 243873780
n×4 325165040
n×5 406456300

Division

n÷y
n÷2 40645630
n÷3 27097086.666667
n÷3 20322815
n÷5 16258252

Exponentiation

ny
n2 6608268952387600
n3 5.3719450955847E+23
n4 4.366921854709E+31
n5 3.5499257989083E+39

Nth Root

y√n
2√n 9016.166591185
3√n 433.19285518788
4√n 94.953496992923
5√n 38.195198467064

Divisors of 81291260

1, 2, 4, 5, 10, 20, 601, 1202, 2404, 3005, 6010, 6763, 12020, 13526, 27052, 33815, 67630, 135260, 4064563, 8129126, 16258252, 20322815, 40645630, 81291260

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 -81291259
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 81291260 can be divided by 24 positive divisors. The sum of these divisors (counting 81291260) is 1, the average is 0.041666666666667.

Base conversion 81291260

Base System Value
2 Binary 100110110000110011111111100
3 Ternary 12122222000122102
4 Quaternary 10312012133330
5 Quinary 131302310020
6 Senary 12022204232
8 Octal 466063774
10 Decimal 81291260
12 Duodecimal 23283678
16 Hexadecimal 4d867fc
20 Vigesimal 1581830
36 Base36 1cecqk

Cryptographic Hash Functions

md5 c100cf902a2f416a5186dcde407efefd
sha1 4fc101d59788d61f0eef695697ac528691a7dac6
sha256 eb51f8d100b6598ef498e034a9a31aa40a49025c8ac09b6ae1045a62e6b99cfb
sha512 461fbe39d7cad77e02d93691f7ac3c57dc30342ab761b223aa3b801fe309a2c16cf9685a36de3339fa396420282a58e5d88146a8a830f1e1a209745c1caeb9bd
ripemd-160 2bdeec6d88569d3c673b8cc29f68c1ac73acecce

81291260 as geometric shapes

Circle

Radius = n
Diameter 162582520
Circumference 510768050.43412
Area 2.0760489193766E+16

Sphere

Radius = n
Volume 2.2501950997035E+24
Surface area 8.3041956775066E+16
Circumference 510768050.43412

Square

Length = n
Perimeter 325165040
Area 6608268952387600
Diagonal 114963202.3944

Cube

Length = n
Surface area 39649613714325600
Volume 5.3719450955847E+23
Space diagonal 140800592.53129

Equilateral Triangle

Length = n
Perimeter 243873780
Area 2.8614643939038E+15
Altitude 70400296.265646

Triangular Pyramid

Length = n
Surface area 2.8614643939038E+15
Volume 6.3308980087496E+22
Height 38321067.464799