81979968 (number)

81979968 is an even 8-digits composite number following 81979967 and preceding 81979969. In scientific notation, it is written as 8.1979968 × 10^7. The sum of its digits is 57. It has a total of 10 prime factors and 112 positive divisors. There are 23224320 positive integers (up to 81979968) that are relatively prime to 81979968.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred seventy-nine thousand nine hundred sixty-eight

Notation

Scientific notation 8.1979968 × 10^7
Engineering notation 8.1979968 × 10^6

Prime Factorization of 81979968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 337 × 181

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 2561874
Product of the distinct prime numbers

The prime factorization of 81979968 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 337 × 181. Since it has a total of 10 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81979968)

Multiplication

n×y
n×2 163959936
n×3 245939904
n×4 327919872
n×5 409899840

Division

n÷y
n÷2 40989984
n÷3 27326656
n÷3 20494992
n÷5 16395993.6

Exponentiation

ny
n2 6720715153281024
n3 5.5096401320309E+23
n4 4.5168012171541E+31
n5 3.7028721924466E+39

Nth Root

y√n
2√n 9054.2789884121
3√n 434.41276819438
4√n 95.153975158225
5√n 38.259698991711

Divisors of 81979968

112 divisors

τ Total Divisors 112
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81979967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0089285714285714
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 112
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81979968 can be divided by 112 positive divisors. The sum of these divisors (counting 81979968) is 1, the average is 0.0089285714285714.

Base conversion 81979968

Base System Value
2 Binary 100111000101110101001000000
3 Ternary 12201021000101010
4 Quaternary 10320232221000
5 Quinary 131441324333
6 Senary 12045040520
8 Octal 470565100
10 Decimal 81979968
12 Duodecimal 23556140
16 Hexadecimal 4e2ea40
20 Vigesimal 15c79i8
36 Base36 1ct45c

Cryptographic Hash Functions

md5 278d7c90d0c2c234b61f3f8c9b93f608
sha1 696d9b25cde0f6ee97f24db9667229cb43f7b05b
sha256 66e05357d05c2d2ff3ec77048c528b5b62965e52203b7c292226b53ae6f20eea
sha512 8e8639e3ce216d1d929d3c3f69bfe5e247dea48b5524f66b34fd83f70faf80ea9184182fef2d666680ba0eb24cbcdf8b54d59c6265888ca0af357063030ae523
ripemd-160 230051bdfe2337c2577ad6e026e7fde256c0a72c

81979968 as geometric shapes

Circle

Radius = n
Diameter 163959936
Circumference 515095330.42065
Area 2.1113749352417E+16

Sphere

Radius = n
Volume 2.3078726616949E+24
Surface area 8.4454997409669E+16
Circumference 515095330.42065

Square

Length = n
Perimeter 327919872
Area 6720715153281024
Diagonal 115937182.58851

Cube

Length = n
Surface area 40324290919686144
Volume 5.5096401320309E+23
Space diagonal 141993469.77887

Equilateral Triangle

Length = n
Perimeter 245939904
Area 2.9101550271702E+15
Altitude 70996734.889435

Triangular Pyramid

Length = n
Surface area 2.9101550271702E+15
Volume 6.4931731654277E+22
Height 38645727.529504