81404920 (number)

81404920 is an even 8-digits composite number following 81404919 and preceding 81404921. In scientific notation, it is written as 8.1404920 × 10^7. The sum of its digits is 28. It has a total of 6 prime factors and 32 positive divisors. There are 32416128 positive integers (up to 81404920) that are relatively prime to 81404920.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1404920 × 10^7
Engineering notation 8.1404920 × 10^6

Prime Factorization of 81404920

Prime Factorization 2 × 2 × 2 × 5 × 229 × 8887

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20351230
Product of the distinct prime numbers

The prime factorization of 81404920 is 2 × 2 × 2 × 5 × 229 × 8887. Since it has a total of 6 prime factors.

Most popular turbo-numbers

8, 8, 68, 9, 115, 951, 8528, 1629, 65101, 15909, 537589, 766036, 3808971, 2490993, 13063433, 50007141, 171136822, 614248157, 7824241092, 5302285716

Basic calculations (n = 81404920)

Multiplication

n×y
n×2 162809840
n×3 244214760
n×4 325619680
n×5 407024600

Division

n÷y
n÷2 40702460
n÷3 27134973.333333
n÷3 20351230
n÷5 16280984

Exponentiation

ny
n2 6626761000206400
n3 5.3945094908092E+23
n4 4.3913961353857E+31
n5 3.5748125108938E+39

Nth Root

y√n
2√n 9022.4675117176
3√n 433.39465535858
4√n 94.986670179124
5√n 38.205873268611

Divisors of 81404920

1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 4580, 8887, 9160, 17774, 35548, 44435, 71096, 88870, 177740, 355480, 2035123, 4070246, 8140492, 10175615, 16280984, 20351230, 40702460, 81404920

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81404919
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81404920 can be divided by 32 positive divisors. The sum of these divisors (counting 81404920) is 1, the average is 0.03125.

Base conversion 81404920

Base System Value
2 Binary 100110110100010001111111000
3 Ternary 12200011210120001
4 Quaternary 10312202033320
5 Quinary 131314424140
6 Senary 12024442344
8 Octal 466421770
10 Decimal 81404920
12 Duodecimal 233193b4
16 Hexadecimal 4da23f8
20 Vigesimal 158fc60
36 Base36 1cgsfs

Cryptographic Hash Functions

md5 fc8596ebd9912716bfa82cb12808042a
sha1 1cec0d45c8ae7de27603901a756da18ab2f2462d
sha256 565b8a4c9484eb71a4619ed0f1b8f9da0c32cf87c8aeab6b6397f75c19f7498b
sha512 e890d8a44a98b4507bd9c404740809c8aed8771737682f77f7ffbd02c7b04c7ac84ed01e837f1199ce9e5cf3b33ff9de0b95a5c31cec424c56f4d59dd9d24c84
ripemd-160 c081cac8b17c14a59c45dcb824708addd893004d

81404920 as geometric shapes

Circle

Radius = n
Diameter 162809840
Circumference 511482197.27613
Area 2.0818583675344E+16

Sphere

Radius = n
Volume 2.2596468514729E+24
Surface area 8.3274334701375E+16
Circumference 511482197.27613

Square

Length = n
Perimeter 325619680
Area 6626761000206400
Diagonal 115123941.9079

Cube

Length = n
Surface area 39760566001238400
Volume 5.3945094908092E+23
Space diagonal 140997457.42608

Equilateral Triangle

Length = n
Perimeter 244214760
Area 2.8694716854934E+15
Altitude 70498728.71304

Triangular Pyramid

Length = n
Surface area 2.8694716854934E+15
Volume 6.357490403544E+22
Height 38374647.302632