81292018 (number)

81292018 is an even 8-digits composite number following 81292017 and preceding 81292019. In scientific notation, it is written as 8.1292018 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 40073460 positive integers (up to 81292018) that are relatively prime to 81292018.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1292018 × 10^7
Engineering notation 8.1292018 × 10^6

Prime Factorization of 81292018

Prime Factorization 2 × 71 × 572479

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81292018
Product of the distinct prime numbers

The prime factorization of 81292018 is 2 × 71 × 572479. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 6, 6, 18, 331, 633, 4589, 5375, 18406, 78580, 568603, 982866, 2256154, 4465135, 30422401, 39522933, 577478482, 313237287, 2843800041, 3210288905

Basic calculations (n = 81292018)

Multiplication

n×y
n×2 162584036
n×3 243876054
n×4 325168072
n×5 406460090

Division

n÷y
n÷2 40646009
n÷3 27097339.333333
n÷3 20323004.5
n÷5 16258403.6

Exponentiation

ny
n2 6608392190512324
n3 5.3720953690219E+23
n4 4.3670847343624E+31
n5 3.5500913083332E+39

Nth Root

y√n
2√n 9016.20862669
3√n 433.19420161866
4√n 94.953718340516
5√n 38.195269696991

Divisors of 81292018

1, 2, 71, 142, 572479, 1144958, 40646009, 81292018

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81292017
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81292018 can be divided by 8 positive divisors. The sum of these divisors (counting 81292018) is 1, the average is 0.125.

Base conversion 81292018

Base System Value
2 Binary 100110110000110101011110010
3 Ternary 12122222001200111
4 Quaternary 10312012223302
5 Quinary 131302321033
6 Senary 12022211534
8 Octal 466065362
10 Decimal 81292018
12 Duodecimal 23283baa
16 Hexadecimal 4d86af2
20 Vigesimal 1581a0i
36 Base36 1cedbm

Cryptographic Hash Functions

md5 f4226e7d708ac3743c10079d9aaeaf17
sha1 075d4c1e8a1825bc75c320684cbc823711e637b2
sha256 09ecdf4b8df061e5b1588793ebabb3906c63ed5033f6945de75b4f46958ec93c
sha512 0fed16ec65534122ae76269a2d5a712e45c91d5713d95715e82cb634683129dc65fcc0ddef945e6ca4e2f2d35fa7617ca127812c6a9aa40f125be24ad51bdea8
ripemd-160 d3a0bcaeae7288b9b37ab4317e062d5c779cb09b

81292018 as geometric shapes

Circle

Radius = n
Diameter 162584036
Circumference 510772813.08858
Area 2.0760876357754E+16

Sphere

Radius = n
Volume 2.2502580460937E+24
Surface area 8.3043505431015E+16
Circumference 510772813.08858

Square

Length = n
Perimeter 325168072
Area 6608392190512324
Diagonal 114964274.36828

Cube

Length = n
Surface area 39650353143073944
Volume 5.3720953690219E+23
Space diagonal 140801905.4258

Equilateral Triangle

Length = n
Perimeter 243876054
Area 2.8615177575772E+15
Altitude 70400952.712902

Triangular Pyramid

Length = n
Surface area 2.8615177575772E+15
Volume 6.3310751076937E+22
Height 38321424.789426