81012018 (number)

81012018 is an even 8-digits composite number following 81012017 and preceding 81012019. In scientific notation, it is written as 8.1012018 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 26274096 positive integers (up to 81012018) that are relatively prime to 81012018.

Interesting facts

Basic properties

Name

Name eighty-one million twelve thousand eighteen

Notation

Scientific notation 8.1012018 × 10^7
Engineering notation 8.1012018 × 10^6

Prime Factorization of 81012018

Prime Factorization 2 × 3 × 37 × 364919

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81012018
Product of the distinct prime numbers

The prime factorization of 81012018 is 2 × 3 × 37 × 364919. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 10, 29, 76, 676, 392, 2134, 7703, 93179, 51136, 133994, 930268, 7876969, 9716907, 49695842, 74635061, 677926360, 620034881, 3308107548, 5455597363

Basic calculations (n = 81012018)

Multiplication

n×y
n×2 162024036
n×3 243036054
n×4 324048072
n×5 405060090

Division

n÷y
n÷2 40506009
n÷3 27004006
n÷3 20253004.5
n÷5 16202403.6

Exponentiation

ny
n2 6562947060432324
n3 5.3167758539279E+23
n4 4.3072274118037E+31
n5 3.4893718461514E+39

Nth Root

y√n
2√n 9000.667641903
3√n 432.69626874429
4√n 94.871848521587
5√n 38.168921622771

Divisors of 81012018

1, 2, 3, 6, 37, 74, 111, 222, 364919, 729838, 1094757, 2189514, 13502003, 27004006, 40506009, 81012018

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81012017
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81012018 can be divided by 16 positive divisors. The sum of these divisors (counting 81012018) is 1, the average is 0.0625.

Base conversion 81012018

Base System Value
2 Binary 100110101000010010100110010
3 Ternary 12122102211121010
4 Quaternary 10311002110302
5 Quinary 131214341033
6 Senary 12012211350
8 Octal 465022462
10 Decimal 81012018
12 Duodecimal 23169b56
16 Hexadecimal 4d42532
20 Vigesimal 1566a0i
36 Base36 1c8d9u

Cryptographic Hash Functions

md5 fc0c3cf4dd9bc45107e46d53257604c3
sha1 46f5457eeda99d94d6f153fc0bd14c94bf903702
sha256 6669e9c9e7339a09d450532de382186c5ee303d2ab41b245b71b9ba9b15e489f
sha512 dd1e6a738317b34c6f8926685b89ccd496846dea604e96ea05f5ffebb7832a8dbf145a3b86bbf8bd76e34fa11d911c0eed4cb576a77e0d3f413c1108c50e3207
ripemd-160 c0b80de2bde922d59b6681d044f799b7b3133595

81012018 as geometric shapes

Circle

Radius = n
Diameter 162024036
Circumference 509013521.20257
Area 2.0618106270953E+16

Sphere

Radius = n
Volume 2.2270858617978E+24
Surface area 8.2472425083812E+16
Circumference 509013521.20257

Square

Length = n
Perimeter 324048072
Area 6562947060432324
Diagonal 114568294.57081

Cube

Length = n
Surface area 39377682362593944
Volume 5.3167758539279E+23
Space diagonal 140316931.19968

Equilateral Triangle

Length = n
Perimeter 243036054
Area 2.8418394390134E+15
Altitude 70158465.599842

Triangular Pyramid

Length = n
Surface area 2.8418394390134E+15
Volume 6.2658804339355E+22
Height 38189431.523604