81904908 (number)

81904908 is an even 8-digits composite number following 81904907 and preceding 81904909. In scientific notation, it is written as 8.1904908 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 24 positive divisors. There are 27262720 positive integers (up to 81904908) that are relatively prime to 81904908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1904908 × 10^7
Engineering notation 8.1904908 × 10^6

Prime Factorization of 81904908

Prime Factorization 2 × 2 × 3 × 761 × 8969

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40952454
Product of the distinct prime numbers

The prime factorization of 81904908 is 2 × 2 × 3 × 761 × 8969. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 8, 19, 17, 690, 244, 7457, 3104, 3725, 31443, 948263, 936878, 7419427, 3912413, 88531944, 59029761, 309053598, 477826245, 2518332110, 154060001

Basic calculations (n = 81904908)

Multiplication

n×y
n×2 163809816
n×3 245714724
n×4 327619632
n×5 409524540

Division

n÷y
n÷2 40952454
n÷3 27301636
n÷3 20476227
n÷5 16380981.6

Exponentiation

ny
n2 6708413954488464
n3 5.4945202776829E+23
n4 4.5002817784776E+31
n5 3.6859516504028E+39

Nth Root

y√n
2√n 9050.1330376962
3√n 434.28014645035
4√n 95.13218718024
5√n 38.25269038851

Divisors of 81904908

1, 2, 3, 4, 6, 12, 761, 1522, 2283, 3044, 4566, 8969, 9132, 17938, 26907, 35876, 53814, 107628, 6825409, 13650818, 20476227, 27301636, 40952454, 81904908

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81904907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81904908 can be divided by 24 positive divisors. The sum of these divisors (counting 81904908) is 1, the average is 0.041666666666667.

Base conversion 81904908

Base System Value
2 Binary 100111000011100010100001100
3 Ternary 12201010012102010
4 Quaternary 10320130110030
5 Quinary 131431424113
6 Senary 12043301220
8 Octal 470342414
10 Decimal 81904908
12 Duodecimal 2351a810
16 Hexadecimal 4e1c50c
20 Vigesimal 15bi258
36 Base36 1cri8c

Cryptographic Hash Functions

md5 2e967406f7887ea30a49b8580234d862
sha1 6bd4b53e6fa02d5b2eb39b6a23c47e5e0f2f44e6
sha256 5511d0d6a9bb505c61c2208428573c5ba7afd60c2c4f89af0ffa07c5f91cef72
sha512 e17b0ffc3f1f08caa430930f551bed272386b38158786cdeb0aa580b74add5e82bb7b9d84df2c20157b52fa8461eea167f920b8d4116dacc324eae7d2b65e990
ripemd-160 a1d6e860e5f762d1d4e5ec417a143d6e2e32c362

81904908 as geometric shapes

Circle

Radius = n
Diameter 163809816
Circumference 514623714.5315
Area 2.107510399666E+16

Sphere

Radius = n
Volume 2.3015392719158E+24
Surface area 8.4300415986641E+16
Circumference 514623714.5315

Square

Length = n
Perimeter 327619632
Area 6708413954488464
Diagonal 115831031.71852

Cube

Length = n
Surface area 40250483726930784
Volume 5.4945202776829E+23
Space diagonal 141863462.04525

Equilateral Triangle

Length = n
Perimeter 245714724
Area 2.9048284518445E+15
Altitude 70931731.022627

Triangular Pyramid

Length = n
Surface area 2.9048284518445E+15
Volume 6.4753542461943E+22
Height 38610343.906174