81492912 (number)

81492912 is an even 8-digits composite number following 81492911 and preceding 81492913. In scientific notation, it is written as 8.1492912 × 10^7. The sum of its digits is 36. It has a total of 7 prime factors and 40 positive divisors. There are 25643520 positive integers (up to 81492912) that are relatively prime to 81492912.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-two thousand nine hundred twelve

Notation

Scientific notation 8.1492912 × 10^7
Engineering notation 8.1492912 × 10^6

Prime Factorization of 81492912

Prime Factorization 2 × 2 × 2 × 2 × 27 × 1763 × 107

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10186614
Product of the distinct prime numbers

The prime factorization of 81492912 is 2 × 2 × 2 × 2 × 27 × 1763 × 107. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81492912)

Multiplication

n×y
n×2 162985824
n×3 244478736
n×4 325971648
n×5 407464560

Division

n÷y
n÷2 40746456
n÷3 27164304
n÷3 20373228
n÷5 16298582.4

Exponentiation

ny
n2 6641094706239744
n3 5.4120214647926E+23
n4 4.4104138897246E+31
n5 3.594174709989E+39

Nth Root

y√n
2√n 9027.342466086
3√n 433.55075374675
4√n 95.012327968985
5√n 38.214129178957

Divisors of 81492912

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81492911
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81492912 can be divided by 40 positive divisors. The sum of these divisors (counting 81492912) is 1, the average is 0.025.

Base conversion 81492912

Base System Value
2 Binary 100110110110111101110110000
3 Ternary 12200100021021000
4 Quaternary 10312313232300
5 Quinary 131330233122
6 Senary 12030402000
8 Octal 466675660
10 Decimal 81492912
12 Duodecimal 23360300
16 Hexadecimal 4db7bb0
20 Vigesimal 1596c5c
36 Base36 1cioc0

Cryptographic Hash Functions

md5 a91f777e8333765fcd02affd9ab2b10b
sha1 721398c8a004517d30bd5cdc7b4650f1c077ac89
sha256 93bb0d16900158939fce482484d40555d48796843fcfa853d89ae9ed8e136a63
sha512 9c645bf2d4ed2b2028be279fca20b0d3d42028f78695d63cd74bcdfc7ad91016484ccff4b146d7cfc69c4b962667315eeeacc4f3e2d9a008d20f63baaf36e2f5
ripemd-160 158202d12e2aecc4fed22c07d7c9b09ed3b6e092

81492912 as geometric shapes

Circle

Radius = n
Diameter 162985824
Circumference 512035067.31768
Area 2.0863614340917E+16

Sphere

Radius = n
Volume 2.2669822499817E+24
Surface area 8.3454457363667E+16
Circumference 512035067.31768

Square

Length = n
Perimeter 325971648
Area 6641094706239744
Diagonal 115248381.38768

Cube

Length = n
Surface area 39846568237438464
Volume 5.4120214647926E+23
Space diagonal 141149864.04074

Equilateral Triangle

Length = n
Perimeter 244478736
Area 2.875678362271E+15
Altitude 70574932.02037

Triangular Pyramid

Length = n
Surface area 2.875678362271E+15
Volume 6.3781284628033E+22
Height 38416127.129226