81379904 (number)

81379904 is an even 8-digits composite number following 81379903 and preceding 81379905. In scientific notation, it is written as 8.1379904 × 10^7. The sum of its digits is 41. It has a total of 7 prime factors and 14 positive divisors. There are 40689920 positive integers (up to 81379904) that are relatively prime to 81379904.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred seventy-nine thousand nine hundred four

Notation

Scientific notation 8.1379904 × 10^7
Engineering notation 8.1379904 × 10^6

Prime Factorization of 81379904

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 1271561

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2543122
Product of the distinct prime numbers

The prime factorization of 81379904 is 2 × 2 × 2 × 2 × 2 × 2 × 1271561. Since it has a total of 7 prime factors.

Most popular turbo-numbers

1, 10, 60, 62, 637, 100, 8527, 3990, 87861, 1202, 483331, 689795, 1775580, 6619384, 14725515, 74878458, 409462331, 554828087, 8604940298, 3793583896

Basic calculations (n = 81379904)

Multiplication

n×y
n×2 162759808
n×3 244139712
n×4 325519616
n×5 406899520

Division

n÷y
n÷2 40689952
n÷3 27126634.666667
n÷3 20344976
n÷5 16275980.8

Exponentiation

ny
n2 6622688775049216
n3 5.3895377673538E+23
n4 4.3860006611163E+31
n5 3.5693231274558E+39

Nth Root

y√n
2√n 9021.0810882067
3√n 433.35025627533
4√n 94.979371908887
5√n 38.203524821784

Divisors of 81379904

1, 2, 4, 8, 16, 32, 64, 1271561, 2543122, 5086244, 10172488, 20344976, 40689952, 81379904

14 divisors

τ Total Divisors 14
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81379903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.071428571428571
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 14
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81379904 can be divided by 14 positive divisors. The sum of these divisors (counting 81379904) is 1, the average is 0.071428571428571.

Base conversion 81379904

Base System Value
2 Binary 100110110011100001001000000
3 Ternary 12200010112020112
4 Quaternary 10312130021000
5 Quinary 131313124104
6 Senary 12024130452
8 Octal 466341100
10 Decimal 81379904
12 Duodecimal 23306a28
16 Hexadecimal 4d9c240
20 Vigesimal 158c9f4
36 Base36 1cg94w

Cryptographic Hash Functions

md5 e0aaf2da55cb6309b480745dafc93194
sha1 54c9621508c17c44cac826e50a09c9afdeaba1ba
sha256 999d76b22d0ebba3a781ea761897cf33a349409d7ca31d8b276a48930a130d3c
sha512 d6a91ebaa01c2cfe9f68b11da318da82ea1afc7cc72d38f29bb7cec4f6e95b969dbc597b3385b4e69b16bc07c4f1520dfe9e37b91e7a023614072977cad04a21
ripemd-160 e93c2bae2b6a108c53ab73608baf308c7c00ba3b

81379904 as geometric shapes

Circle

Radius = n
Diameter 162759808
Circumference 511325017.11249
Area 2.0805790402706E+16

Sphere

Radius = n
Volume 2.2575643008218E+24
Surface area 8.3223161610825E+16
Circumference 511325017.11249

Square

Length = n
Perimeter 325519616
Area 6622688775049216
Diagonal 115088563.94142

Cube

Length = n
Surface area 39736132650295296
Volume 5.3895377673538E+23
Space diagonal 140954128.44308

Equilateral Triangle

Length = n
Perimeter 244139712
Area 2.8677083602753E+15
Altitude 70477064.221539

Triangular Pyramid

Length = n
Surface area 2.8677083602753E+15
Volume 6.3516311712615E+22
Height 38362854.64714