81749166 (number)

81749166 is an even 8-digits composite number following 81749165 and preceding 81749167. In scientific notation, it is written as 8.1749166 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 27227448 positive integers (up to 81749166) that are relatively prime to 81749166.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1749166 × 10^7
Engineering notation 8.1749166 × 10^6

Prime Factorization of 81749166

Prime Factorization 2 × 3 × 9739 × 1399

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81749166
Product of the distinct prime numbers

The prime factorization of 81749166 is 2 × 3 × 9739 × 1399. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 5, 37, 95, 900, 970, 3344, 6235, 2903, 80014, 968353, 306814, 6927356, 957737, 70032745, 66946717, 401384444, 174439965, 8767777529, 6149156341

Basic calculations (n = 81749166)

Multiplication

n×y
n×2 163498332
n×3 245247498
n×4 326996664
n×5 408745830

Division

n÷y
n÷2 40874583
n÷3 27249722
n÷3 20437291.5
n÷5 16349833.2

Exponentiation

ny
n2 6682926141695556
n3 5.4632363852321E+23
n4 4.4661501815358E+31
n5 3.651040525713E+39

Nth Root

y√n
2√n 9041.5245395895
3√n 434.00471088631
4√n 95.086931486874
5√n 38.238131829967

Divisors of 81749166

1, 2, 3, 6, 1399, 2798, 4197, 8394, 9739, 19478, 29217, 58434, 13624861, 27249722, 40874583, 81749166

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 -81749165
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 81749166 can be divided by 16 positive divisors. The sum of these divisors (counting 81749166) is 1, the average is 0.0625.

Base conversion 81749166

Base System Value
2 Binary 100110111110110010010101110
3 Ternary 12200211021202220
4 Quaternary 10313312102232
5 Quinary 131411433131
6 Senary 12040100210
8 Octal 467662256
10 Decimal 81749166
12 Duodecimal 23464666
16 Hexadecimal 4df64ae
20 Vigesimal 15aici6
36 Base36 1co626

Cryptographic Hash Functions

md5 ca1cd82861414f108dc98f38011391c9
sha1 5fb01a25d8bdfad09eaf80f0b8517f4e4ba97a3e
sha256 4e49af092cab676532ae8cdd2f633b0111dcd4eecf07763416e05348ac0182b1
sha512 897915a6e31161461e03e3d6502dff27ef632f8ab73e77a3425a36446c5816258c83783b951fe14bdb9297c85eb9e84f5a29623b1cddf59ca0a60efc0bd6b1f6
ripemd-160 1dcd2a72add6e219073f8fcea35ffe8164119308

81749166 as geometric shapes

Circle

Radius = n
Diameter 163498332
Circumference 513645158.68538
Area 2.0995031671234E+16

Sphere

Radius = n
Volume 2.2884351056893E+24
Surface area 8.3980126684936E+16
Circumference 513645158.68538

Square

Length = n
Perimeter 326996664
Area 6682926141695556
Diagonal 115610779.26989

Cube

Length = n
Surface area 40097556850173336
Volume 5.4632363852321E+23
Space diagonal 141593708.98838

Equilateral Triangle

Length = n
Perimeter 245247498
Area 2.8937919051617E+15
Altitude 70796854.494191

Triangular Pyramid

Length = n
Surface area 2.8937919051617E+15
Volume 6.4384858253712E+22
Height 38536926.423297