81508908 (number)

81508908 is an even 8-digits composite number following 81508907 and preceding 81508909. In scientific notation, it is written as 8.1508908 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 96 positive divisors. There are 23595264 positive integers (up to 81508908) that are relatively prime to 81508908.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eight thousand nine hundred eight

Notation

Scientific notation 8.1508908 × 10^7
Engineering notation 8.1508908 × 10^6

Prime Factorization of 81508908

Prime Factorization 2 × 2 × 3 × 13 × 43 × 29 × 419

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 40754454
Product of the distinct prime numbers

The prime factorization of 81508908 is 2 × 2 × 3 × 13 × 43 × 29 × 419. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81508908)

Multiplication

n×y
n×2 163017816
n×3 244526724
n×4 326035632
n×5 407544540

Division

n÷y
n÷2 40754454
n÷3 27169636
n÷3 20377227
n÷5 16301781.6

Exponentiation

ny
n2 6643702083352464
n3 5.4152090189138E+23
n4 4.4138777372342E+31
n5 3.5977035440747E+39

Nth Root

y√n
2√n 9028.2283976426
3√n 433.5791186846
4√n 95.016990047268
5√n 38.215629248613

Divisors of 81508908

96 divisors

τ Total Divisors 96
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81508907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.010416666666667
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 96
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81508908 can be divided by 96 positive divisors. The sum of these divisors (counting 81508908) is 1, the average is 0.010416666666667.

Base conversion 81508908

Base System Value
2 Binary 100110110111011101000101100
3 Ternary 12200101002012110
4 Quaternary 10312323220230
5 Quinary 131331241113
6 Senary 12031004020
8 Octal 466735054
10 Decimal 81508908
12 Duodecimal 23369610
16 Hexadecimal 4dbba2c
20 Vigesimal 1598c58
36 Base36 1cj0oc

Cryptographic Hash Functions

md5 ed9b3c087843becf91ac4c19add978b7
sha1 96dd43bafd3b0122c473ee4cad2ec75945db3581
sha256 114de5f9d6122460a72e601b6f37f7b989281bbd09568d166ab0c802cd9fb8cc
sha512 3fcfc0212ce89308162a078f6b607d96392414e2296dd88030efe03a542fbdedd08653fa3d45efbe8a3b682177e77780de1ad1a8ac965322fcdff0f4d7dbfe0b
ripemd-160 2f62caf3c5c5318a96aa80c298b8e514afed9b06

81508908 as geometric shapes

Circle

Radius = n
Diameter 163017816
Circumference 512135573.14985
Area 2.0871805657699E+16

Sphere

Radius = n
Volume 2.2683174495297E+24
Surface area 8.3487222630797E+16
Circumference 512135573.14985

Square

Length = n
Perimeter 326035632
Area 6643702083352464
Diagonal 115271003.14782

Cube

Length = n
Surface area 39862212500114784
Volume 5.4152090189138E+23
Space diagonal 141177569.92546

Equilateral Triangle

Length = n
Perimeter 244526724
Area 2.8768073896794E+15
Altitude 70588784.962729

Triangular Pyramid

Length = n
Surface area 2.8768073896794E+15
Volume 6.3818850313609E+22
Height 38423667.71594