81008081 (number)

81008081 is an odd 8-digits composite number following 81008080 and preceding 81008082. In scientific notation, it is written as 8.1008081 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 62995200 positive integers (up to 81008081) that are relatively prime to 81008081.

Interesting facts

Basic properties

Name

Name eighty-one million eight thousand eighty-one

Notation

Scientific notation 8.1008081 × 10^7
Engineering notation 8.1008081 × 10^6

Prime Factorization of 81008081

Prime Factorization 11 × 7 × 1361 × 773

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81008081
Product of the distinct prime numbers

The prime factorization of 81008081 is 11 × 7 × 1361 × 773. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 9, 33, 43, 841, 584, 2360, 9440, 62794, 66252, 995811, 917133, 8516667, 4452, 20224627, 94603240, 48135630, 195416031, 7435048975, 4300671347

Basic calculations (n = 81008081)

Multiplication

n×y
n×2 162016162
n×3 243024243
n×4 324032324
n×5 405040405

Division

n÷y
n÷2 40504040.5
n÷3 27002693.666667
n÷3 20252020.25
n÷5 16201616.2

Exponentiation

ny
n2 6562309187302561
n3 5.3160007419205E+23
n4 4.3063901869756E+31
n5 3.4885240508412E+39

Nth Root

y√n
2√n 9000.4489332477
3√n 432.68925927891
4√n 94.870695861513
5√n 38.168550630987

Divisors of 81008081

1, 7, 11, 77, 773, 1361, 5411, 8503, 9527, 14971, 59521, 104797, 1052053, 7364371, 11572583, 81008081

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81008080
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81008081 can be divided by 16 positive divisors. The sum of these divisors (counting 81008081) is 1, the average is 0.0625.

Base conversion 81008081

Base System Value
2 Binary 100110101000001010111010001
3 Ternary 12122102122012022
4 Quaternary 10311001113101
5 Quinary 131214224311
6 Senary 12012141225
8 Octal 465012721
10 Decimal 81008081
12 Duodecimal 23167815
16 Hexadecimal 4d415d1
20 Vigesimal 1566041
36 Base36 1c8a8h

Cryptographic Hash Functions

md5 659324eb45484fadb5cb6aa372ad571a
sha1 f013a278a71eba9a991f758c36f67320c3d1eabc
sha256 e72a4825932618d991800e499b02d953084f428a2fa17333d5c70cf5ec48907c
sha512 9cbbb00878ef89604141cefb9ea454717363682cd00dc1a79ae158e37f6fda4447d2da0bbff2fa677245f639d944fe1f5b6043ba8e2da590119db405bcf715a6
ripemd-160 5ab49ad59e30d2c6858f1504af6ad15327e1caa9

81008081 as geometric shapes

Circle

Radius = n
Diameter 162016162
Circumference 508988784.30201
Area 2.0616102333415E+16

Sphere

Radius = n
Volume 2.2267611836394E+24
Surface area 8.2464409333658E+16
Circumference 508988784.30201

Square

Length = n
Perimeter 324032324
Area 6562309187302561
Diagonal 114562726.81202

Cube

Length = n
Surface area 39373855123815366
Volume 5.3160007419205E+23
Space diagonal 140310112.11566

Equilateral Triangle

Length = n
Perimeter 243024243
Area 2.841563231846E+15
Altitude 70155056.057828

Triangular Pyramid

Length = n
Surface area 2.841563231846E+15
Volume 6.2649669556745E+22
Height 38187575.604006