81508738 (number)

81508738 is an even 8-digits composite number following 81508737 and preceding 81508739. In scientific notation, it is written as 8.1508738 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 12 positive divisors. There are 39720480 positive integers (up to 81508738) that are relatively prime to 81508738.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eight thousand seven hundred thirty-eight

Notation

Scientific notation 8.1508738 × 10^7
Engineering notation 8.1508738 × 10^6

Prime Factorization of 81508738

Prime Factorization 2 × 41 × 997 × 997

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81754
Product of the distinct prime numbers

The prime factorization of 81508738 is 2 × 41 × 997 × 997. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 10, 17, 73, 32, 943, 4745, 2365, 66731, 59686, 675102, 811683, 4294436, 1099826, 57815335, 69280891, 161321317, 659713262, 7310724610, 7254625438

Basic calculations (n = 81508738)

Multiplication

n×y
n×2 163017476
n×3 244526214
n×4 326034952
n×5 407543690

Division

n÷y
n÷2 40754369
n÷3 27169579.333333
n÷3 20377184.5
n÷5 16301747.6

Exponentiation

ny
n2 6643674370352644
n3 5.4151751361039E+23
n4 4.4138409139281E+31
n5 3.5976660262704E+39

Nth Root

y√n
2√n 9028.218982723
3√n 433.57881725128
4√n 95.016940503907
5√n 38.215613307625

Divisors of 81508738

1, 2, 41, 82, 997, 1994, 40877, 81754, 994009, 1988018, 40754369, 81508738

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81508737
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81508738 can be divided by 12 positive divisors. The sum of these divisors (counting 81508738) is 1, the average is 0.083333333333333.

Base conversion 81508738

Base System Value
2 Binary 100110110111011100110000010
3 Ternary 12200101001222011
4 Quaternary 10312323212002
5 Quinary 131331234423
6 Senary 12031003134
8 Octal 466734602
10 Decimal 81508738
12 Duodecimal 233694aa
16 Hexadecimal 4dbb982
20 Vigesimal 1598bgi
36 Base36 1cj0jm

Cryptographic Hash Functions

md5 60365c23ebdb38aa8de823874a6f73dc
sha1 16853e27bc67882c7177f00fcaa0983995dfa721
sha256 bac1221ef99a587073eef192d8f2b05e4d615c67b4bb14f17b09b4742ab663dd
sha512 78ff5c9bc1606e061161e9e98779a3ddd52b407d180a5a5ae1c84cbf6bba449da7be7459397cfee21f5b941807ae93bc4432b25cf403958d0a7d9664593c91e4
ripemd-160 5c20a018fbd54fa5cf02a425b9a824704502869c

81508738 as geometric shapes

Circle

Radius = n
Diameter 163017476
Circumference 512134505.00835
Area 2.0871718594743E+16

Sphere

Radius = n
Volume 2.2683032567315E+24
Surface area 8.3486874378971E+16
Circumference 512134505.00835

Square

Length = n
Perimeter 326034952
Area 6643674370352644
Diagonal 115270762.73152

Cube

Length = n
Surface area 39862046222115864
Volume 5.4151751361039E+23
Space diagonal 141177275.47682

Equilateral Triangle

Length = n
Perimeter 244526214
Area 2.8767953895985E+15
Altitude 70588637.73841

Triangular Pyramid

Length = n
Surface area 2.8767953895985E+15
Volume 6.3818451000864E+22
Height 38423587.577172