81749685 (number)

81749685 is an odd 8-digits composite number following 81749684 and preceding 81749686. In scientific notation, it is written as 8.1749685 × 10^7. The sum of its digits is 48. It has a total of 5 prime factors and 32 positive divisors. There are 37942272 positive integers (up to 81749685) that are relatively prime to 81749685.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand six hundred eighty-five

Notation

Scientific notation 8.1749685 × 10^7
Engineering notation 8.1749685 × 10^6

Prime Factorization of 81749685

Prime Factorization 3 × 5 × 799 × 19 × 359

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81749685
Product of the distinct prime numbers

The prime factorization of 81749685 is 3 × 5 × 799 × 19 × 359. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 7, 8, 67, 779, 241, 1518, 8000, 47095, 41507, 678172, 231369, 6357517, 1251922, 27348736, 27249026, 967046888, 395240497, 5492776190, 2576886155

Basic calculations (n = 81749685)

Multiplication

n×y
n×2 163499370
n×3 245249055
n×4 326998740
n×5 408748425

Division

n÷y
n÷2 40874842.5
n÷3 27249895
n÷3 20437421.25
n÷5 16349937

Exponentiation

ny
n2 6683010997599225
n3 5.4633404390527E+23
n4 4.4662635994032E+31
n5 3.6511564237818E+39

Nth Root

y√n
2√n 9041.553240456
3√n 434.00562933796
4√n 95.087082405845
5√n 38.238180382242

Divisors of 81749685

1, 3, 5, 15, 19, 57, 95, 285, 359, 799, 1077, 1795, 2397, 3995, 5385, 6821, 11985, 15181, 20463, 34105, 45543, 75905, 102315, 227715, 286841, 860523, 1434205, 4302615, 5449979, 16349937, 27249895, 81749685

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749684
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749685 can be divided by 32 positive divisors. The sum of these divisors (counting 81749685) is 1, the average is 0.03125.

Base conversion 81749685

Base System Value
2 Binary 100110111110110011010110101
3 Ternary 12200211022111010
4 Quaternary 10313312122311
5 Quinary 131411442220
6 Senary 12040102433
8 Octal 467663265
10 Decimal 81749685
12 Duodecimal 23464a19
16 Hexadecimal 4df66b5
20 Vigesimal 15aie45
36 Base36 1co6gl

Cryptographic Hash Functions

md5 8fec42e188d80115686cfcd8ded5fff4
sha1 3f90ce322f65843e32435c3806365f5830869eec
sha256 b03d95b14d3cb169fd2fe994b35ca2e4655dcb407d64cd405ed6b8f9ffce1b4e
sha512 1df1c0dcdfd3e73ecdacec086aa1185a8702ea58360ba2845e95c3a5d5c70fc66f29615ce912fd90e08b515101e43ad1dc04fe34319d0900a6b994b511eaa0c2
ripemd-160 70fd9a2ea70bd4e938da03035b797038424bb62d

81749685 as geometric shapes

Circle

Radius = n
Diameter 163499370
Circumference 513648419.65856
Area 2.0995298253918E+16

Sphere

Radius = n
Volume 2.2884786916517E+24
Surface area 8.398119301567E+16
Circumference 513648419.65856

Square

Length = n
Perimeter 326998740
Area 6683010997599225
Diagonal 115611513.24673

Cube

Length = n
Surface area 40098065985595350
Volume 5.4633404390527E+23
Space diagonal 141594607.92275

Equilateral Triangle

Length = n
Perimeter 245249055
Area 2.8938286488459E+15
Altitude 70797303.961376

Triangular Pyramid

Length = n
Surface area 2.8938286488459E+15
Volume 6.4386084539748E+22
Height 38537171.082243