81138900 (number)

81138900 is an even 8-digits composite number following 81138899 and preceding 81138901. In scientific notation, it is written as 8.1138900 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 24 positive divisors. There are 21636960 positive integers (up to 81138900) that are relatively prime to 81138900.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1138900 × 10^7
Engineering notation 8.1138900 × 10^6

Prime Factorization of 81138900

Prime Factorization 2 × 2 × 15 × 5 × 270463

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40569450
Product of the distinct prime numbers

The prime factorization of 81138900 is 2 × 2 × 15 × 5 × 270463. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 2, 28, 80, 764, 471, 3309, 5888, 4037, 17434, 405042, 540515, 6369366, 448395, 66984938, 48159525, 115044554, 45929421, 2451120664, 3193105455

Basic calculations (n = 81138900)

Multiplication

n×y
n×2 162277800
n×3 243416700
n×4 324555600
n×5 405694500

Division

n÷y
n÷2 40569450
n÷3 27046300
n÷3 20284725
n÷5 16227780

Exponentiation

ny
n2 6583521093210000
n3 5.3417965962986E+23
n4 4.3342749984741E+31
n5 3.5167830567369E+39

Nth Root

y√n
2√n 9007.7133613365
3√n 432.92204895091
4√n 94.908974082204
5√n 38.180870264582

Divisors of 81138900

1, 2, 4, 5, 10, 15, 20, 30, 60, 75, 150, 300, 270463, 540926, 1081852, 1352315, 2704630, 4056945, 5409260, 8113890, 16227780, 20284725, 40569450, 81138900

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 -81138899
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 81138900 can be divided by 24 positive divisors. The sum of these divisors (counting 81138900) is 1, the average is 0.041666666666667.

Base conversion 81138900

Base System Value
2 Binary 100110101100001010011010100
3 Ternary 12122200021122110
4 Quaternary 10311201103110
5 Quinary 131232421100
6 Senary 12015031020
8 Octal 465412324
10 Decimal 81138900
12 Duodecimal 2320b470
16 Hexadecimal 4d614d4
20 Vigesimal 1572750
36 Base36 1cb36c

Cryptographic Hash Functions

md5 c01dbe77f3fa9ddfe513251df9ed140c
sha1 b8680de1b344d54fa024698bffe0a0ae4e7c415b
sha256 aac8277c9bd005e2fc654eb393844fba412ee3c09e407972e0c26ca31c4419da
sha512 d8ec0270ebe490879186b1219b20f5649631f3a4fbfdfa9a15537f54dc14d839a81229ca954fa132531d1c54a3aac6a4ac1b9a26b63f451b919e76446a3362d9
ripemd-160 a6e342251664444f28dff4dc918865f672064cba

81138900 as geometric shapes

Circle

Radius = n
Diameter 162277800
Circumference 509810744.32071
Area 2.0682741501182E+16

Sphere

Radius = n
Volume 2.2375665258537E+24
Surface area 8.2730966004728E+16
Circumference 509810744.32071

Square

Length = n
Perimeter 324555600
Area 6583521093210000
Diagonal 114747732.81603

Cube

Length = n
Surface area 39501126559260000
Volume 5.3417965962986E+23
Space diagonal 140536697.27025

Equilateral Triangle

Length = n
Perimeter 243416700
Area 2.8507482565353E+15
Altitude 70268348.635125

Triangular Pyramid

Length = n
Surface area 2.8507482565353E+15
Volume 6.2953676616032E+22
Height 38249244.272011