81509908 (number)

81509908 is an even 8-digits composite number following 81509907 and preceding 81509909. In scientific notation, it is written as 8.1509908 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 12 positive divisors. There are 40086720 positive integers (up to 81509908) that are relatively prime to 81509908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1509908 × 10^7
Engineering notation 8.1509908 × 10^6

Prime Factorization of 81509908

Prime Factorization 2 × 2 × 61 × 334057

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40754954
Product of the distinct prime numbers

The prime factorization of 81509908 is 2 × 2 × 61 × 334057. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 70, 41, 327, 879, 915, 4685, 21214, 11021, 620251, 134420, 8734757, 632722, 82967639, 87819287, 275728739, 935219370, 3232710110, 2186230437

Basic calculations (n = 81509908)

Multiplication

n×y
n×2 163019816
n×3 244529724
n×4 326039632
n×5 407549540

Division

n÷y
n÷2 40754954
n÷3 27169969.333333
n÷3 20377477
n÷5 16301981.6

Exponentiation

ny
n2 6643865102168464
n3 5.4154083324216E+23
n4 4.4140943495812E+31
n5 3.5979242433768E+39

Nth Root

y√n
2√n 9028.2837793237
3√n 433.58089181327
4√n 95.017281477233
5√n 38.215723018589

Divisors of 81509908

1, 2, 4, 61, 122, 244, 334057, 668114, 1336228, 20377477, 40754954, 81509908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81509907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81509908 can be divided by 12 positive divisors. The sum of these divisors (counting 81509908) is 1, the average is 0.083333333333333.

Base conversion 81509908

Base System Value
2 Binary 100110110111011111000010100
3 Ternary 12200101010120111
4 Quaternary 10312323320110
5 Quinary 131331304113
6 Senary 12031012404
8 Octal 466737024
10 Decimal 81509908
12 Duodecimal 2336a104
16 Hexadecimal 4dbbe14
20 Vigesimal 1598ef8
36 Base36 1cj1g4

Cryptographic Hash Functions

md5 b2741d3aa76a83ca750fbc3425402931
sha1 1f9d4693d9a9f3edf4e5d3ff0471a87f69ec4c6a
sha256 2318c95c34bd880fe4e142ccede9dd1b442330cd8b4d27ffabe77e7bde7832f9
sha512 7f62cfe609db2c4d60eba0aa270b90b069d39002b9b9f8008861c395ced8317cc5332a98e60bffae1c33c82363059d31ac40a7b8b243ef207587b019b5764a4f
ripemd-160 1fcb77719d8969f5c45fa6f72ab512a88d649cad

81509908 as geometric shapes

Circle

Radius = n
Diameter 163019816
Circumference 512141856.33516
Area 2.0872317796414E+16

Sphere

Radius = n
Volume 2.2684009377766E+24
Surface area 8.3489271185656E+16
Circumference 512141856.33516

Square

Length = n
Perimeter 326039632
Area 6643865102168464
Diagonal 115272417.36138

Cube

Length = n
Surface area 39863190613010784
Volume 5.4154083324216E+23
Space diagonal 141179301.97626

Equilateral Triangle

Length = n
Perimeter 244529724
Area 2.8768779788974E+15
Altitude 70589650.988132

Triangular Pyramid

Length = n
Surface area 2.8768779788974E+15
Volume 6.3821199245824E+22
Height 38424139.120461