81008021 (number)

81008021 is an odd 8-digits prime number following 81008020 and preceding 81008022. In scientific notation, it is written as 8.1008021 × 10^7. The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors. There are 81008020 positive integers (up to 81008021) that are relatively prime to 81008021.

Interesting facts

Basic properties

Name

Name eighty-one million eight thousand twenty-one

Notation

Scientific notation 8.1008021 × 10^7
Engineering notation 8.1008021 × 10^6

Prime Factorization of 81008021

Prime Factorization 81008021

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 81008021
Product of the distinct prime numbers

The prime factorization of 81008021 is 81008021. Since it has a total of 1 prime factors.

Most popular turbo-numbers

4, 6, 83, 49, 575, 397, 608, 9461, 32337, 82198, 39783, 317830, 1105486, 3609195, 4596742, 33280508, 544697075, 60052292, 3420262946, 807619591

Basic calculations (n = 81008021)

Multiplication

n×y
n×2 162016042
n×3 243024063
n×4 324032084
n×5 405040105

Division

n÷y
n÷2 40504010.5
n÷3 27002673.666667
n÷3 20252005.25
n÷5 16201604.2

Exponentiation

ny
n2 6562299466336441
n3 5.3159889297727E+23
n4 4.306377428588E+31
n5 3.4885111316898E+39

Nth Root

y√n
2√n 9000.44560008
3√n 432.68915245269
4√n 94.870678294613
5√n 38.168544976949

Divisors of 81008021

1, 81008021

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 81008022
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 40504011
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 9000.4456556328
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999753111
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81008021 can be divided by 2 positive divisors. The sum of these divisors (counting 81008021) is 81008022, the average is 40504011.

Base conversion 81008021

Base System Value
2 Binary 100110101000001010110010101
3 Ternary 12122102122010002
4 Quaternary 10311001112111
5 Quinary 131214224041
6 Senary 12012141045
8 Octal 465012625
10 Decimal 81008021
12 Duodecimal 23167785
16 Hexadecimal 4d41595
20 Vigesimal 1566011
36 Base36 1c8a6t

Cryptographic Hash Functions

md5 e5fe27a2388223423fd0e8bf40f4923f
sha1 bdc0a0b324b7c2cebddbd4f33d61e14fcef9f7da
sha256 e88abc5986b053c3318de2ac7b3094cda640c6a5128250078ad41fa4d042a5b6
sha512 1a5870c56ed965edb486ba0e626f0f08de79d83c285b66d35940977fcb5fe21e488a041236c6ed94aefe3ad9dfdb674e541f6ac277e23ba3cd709340b60d388c
ripemd-160 0985caa0a08c311b615e341e78e8e81ddc979e94

81008021 as geometric shapes

Circle

Radius = n
Diameter 162016042
Circumference 508988407.3109
Area 2.0616071794099E+16

Sphere

Radius = n
Volume 2.2267562357785E+24
Surface area 8.2464287176395E+16
Circumference 508988407.3109

Square

Length = n
Perimeter 324032084
Area 6562299466336441
Diagonal 114562641.9592

Cube

Length = n
Surface area 39373796798018646
Volume 5.3159889297727E+23
Space diagonal 140310008.19261

Equilateral Triangle

Length = n
Perimeter 243024063
Area 2.8415590225442E+15
Altitude 70155004.096303

Triangular Pyramid

Length = n
Surface area 2.8415590225442E+15
Volume 6.2649530349248E+22
Height 38187547.319735