81121013 (number)

81121013 is an odd 8-digits composite number following 81121012 and preceding 81121014. In scientific notation, it is written as 8.1121013 × 10^7. The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors. There are 75215520 positive integers (up to 81121013) that are relatively prime to 81121013.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand thirteen

Notation

Scientific notation 8.1121013 × 10^7
Engineering notation 8.1121013 × 10^6

Prime Factorization of 81121013

Prime Factorization 47 × 19 × 90841

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81121013
Product of the distinct prime numbers

The prime factorization of 81121013 is 47 × 19 × 90841. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81121013)

Multiplication

n×y
n×2 162242026
n×3 243363039
n×4 324484052
n×5 405605065

Division

n÷y
n÷2 40560506.5
n÷3 27040337.666667
n÷3 20280253.25
n÷5 16224202.6

Exponentiation

ny
n2 6580618750146169
n3 5.3382645917865E+23
n4 4.3304543134775E+31
n5 3.5129084065952E+39

Nth Root

y√n
2√n 9006.7204353194
3√n 432.89023418312
4√n 94.903742999522
5√n 38.179186728187

Divisors of 81121013

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121012
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121013 can be divided by 8 positive divisors. The sum of these divisors (counting 81121013) is 1, the average is 0.125.

Base conversion 81121013

Base System Value
2 Binary 100110101011100111011110101
3 Ternary 12122122101002222
4 Quaternary 10311130323311
5 Quinary 131231333023
6 Senary 12014412125
8 Octal 465347365
10 Decimal 81121013
12 Duodecimal 23201045
16 Hexadecimal 4d5cef5
20 Vigesimal 15702ad
36 Base36 1capdh

Cryptographic Hash Functions

md5 11fdcba7227e72d0f726e23381a9ee0e
sha1 3fa47f04f95af8bb1e6f0965afe528c25f29319d
sha256 055f36ca101887013fa62c8f62f0274649979c9acd7409b08de0ecf401d62338
sha512 eea9c79a238ed3f0f40663ff00e10b3642e66cdefa55ca20cff8a18858902c1a628cdd47ec6573aa287a869dc14f57fc575b4274c1eb5e8e09ce8a04034956bb
ripemd-160 01b58643521191d9e4a04233b9fd71d90bada210

81121013 as geometric shapes

Circle

Radius = n
Diameter 162242026
Circumference 509698356.98512
Area 2.0673623521534E+16

Sphere

Radius = n
Volume 2.2360870432633E+24
Surface area 8.2694494086138E+16
Circumference 509698356.98512

Square

Length = n
Perimeter 324484052
Area 6580618750146169
Diagonal 114722436.77804

Cube

Length = n
Surface area 39483712500877014
Volume 5.3382645917865E+23
Space diagonal 140505716.07746

Equilateral Triangle

Length = n
Perimeter 243363039
Area 2.8494915051234E+15
Altitude 70252858.038728

Triangular Pyramid

Length = n
Surface area 2.8494915051234E+15
Volume 6.2912051543671E+22
Height 38240812.259348