81509738 (number)

81509738 is an even 8-digits composite number following 81509737 and preceding 81509739. In scientific notation, it is written as 8.1509738 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 40720480 positive integers (up to 81509738) that are relatively prime to 81509738.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1509738 × 10^7
Engineering notation 8.1509738 × 10^6

Prime Factorization of 81509738

Prime Factorization 2 × 1229 × 33161

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81509738
Product of the distinct prime numbers

The prime factorization of 81509738 is 2 × 1229 × 33161. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 10, 6, 96, 585, 938, 8086, 3005, 25477, 92815, 662030, 272799, 2844769, 3182585, 48565122, 24034161, 506452390, 645234054, 2190527317, 4642607459

Basic calculations (n = 81509738)

Multiplication

n×y
n×2 163019476
n×3 244529214
n×4 326038952
n×5 407548690

Division

n÷y
n÷2 40754869
n÷3 27169912.666667
n÷3 20377434.5
n÷5 16301947.6

Exponentiation

ny
n2 6643837388828644
n3 5.4153744487803E+23
n4 4.4140575249197E+31
n5 3.5978867237314E+39

Nth Root

y√n
2√n 9028.2743644619
3√n 433.58059038242
4√n 95.017231934328
5√n 38.215707077758

Divisors of 81509738

1, 2, 1229, 2458, 33161, 66322, 40754869, 81509738

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 -81509737
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 81509738 can be divided by 8 positive divisors. The sum of these divisors (counting 81509738) is 1, the average is 0.125.

Base conversion 81509738

Base System Value
2 Binary 100110110111011110101101010
3 Ternary 12200101010100012
4 Quaternary 10312323311222
5 Quinary 131331302423
6 Senary 12031011522
8 Octal 466736552
10 Decimal 81509738
12 Duodecimal 23369ba2
16 Hexadecimal 4dbbd6a
20 Vigesimal 1598e6i
36 Base36 1cj1be

Cryptographic Hash Functions

md5 61d9f2b7aa3932a3372f21695c81eed5
sha1 1abe8bb19e0ba984b663729123f2c722ec716288
sha256 2974e86bbb0b30bcfce66c53991403685ac979df541b684c50d3d4aaebba5ff5
sha512 698c0f117d9dabd9c737c5ac1a243b7166552f03fb6ff2a83a2de8b513277a3bb3ec135a0e3342a528991daa4c775955f9d0bca92151386ad3ff8e1b485b55c7
ripemd-160 d44c75c375923d0f1d9367d707f930192be8cf56

81509738 as geometric shapes

Circle

Radius = n
Diameter 163019476
Circumference 512140788.19366
Area 2.0872230732389E+16

Sphere

Radius = n
Volume 2.2683867446301E+24
Surface area 8.3488922929557E+16
Circumference 512140788.19366

Square

Length = n
Perimeter 326038952
Area 6643837388828644
Diagonal 115272176.94508

Cube

Length = n
Surface area 39863024332971864
Volume 5.4153744487803E+23
Space diagonal 141179007.52763

Equilateral Triangle

Length = n
Perimeter 244529214
Area 2.8768659786692E+15
Altitude 70589503.763814

Triangular Pyramid

Length = n
Surface area 2.8768659786692E+15
Volume 6.3820799923282E+22
Height 38424058.981693