81946 (number)

81946 is an even 5-digits composite number following 81945 and preceding 81947. In scientific notation, it is written as 8.1946 × 10^4. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 40972 positive integers (up to 81946) that are relatively prime to 81946.

Interesting facts

Basic properties

Name

Name eighty-one thousand nine hundred forty-six

Notation

Scientific notation 8.1946 × 10^4
Engineering notation 8.1946 × 10^3

Prime Factorization of 81946

Prime Factorization 2 × 40973

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 81946
Product of the distinct prime numbers

The prime factorization of 81946 is 2 × 40973. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 10, 4, 17, 189, 179, 4875, 8446, 50684, 64308, 250368, 684436, 6386028, 9850910, 66892013, 67602582, 378477136, 875812211, 6982992538, 2614573401

Basic calculations (n = 81946)

Multiplication

n×y
n×2 163892
n×3 245838
n×4 327784
n×5 409730

Division

n÷y
n÷2 40973
n÷3 27315.333333333
n÷3 20486.5
n÷5 16389.2

Exponentiation

ny
n2 6715146916
n3 550279429178536
n4 4.5093198103464E+19
n5 3.6952072117865E+24

Nth Root

y√n
2√n 286.26211764745
3√n 43.435276096829
4√n 16.919282421174
5√n 9.6096053404333

Divisors of 81946

1, 2, 40973, 81946

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81945
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81946 can be divided by 4 positive divisors. The sum of these divisors (counting 81946) is 1, the average is 0.25.

Base conversion 81946

Base System Value
2 Binary 10100000000011010
3 Ternary 11011102001
4 Quaternary 110000122
5 Quinary 10110241
6 Senary 1431214
8 Octal 240032
10 Decimal 81946
12 Duodecimal 3b50a
16 Hexadecimal 1401a
20 Vigesimal a4h6
36 Base36 1r8a

Cryptographic Hash Functions

md5 a390e77f092cf2b39c9954a6a055e20e
sha1 12c28ddeef6811e5a570f4448fc3e68346267cf8
sha256 b22c86803c1b16fbffaa529180632373ea1e42a22f3617057d18a5c039dc1a0e
sha512 8056a338fb0adcf159a3734aec42af18596ed110e6a7d375bd9b35a8573dfd9f0192f350f5a83b5cb9f53d025b34d39037451e33d309332ef1ad0067a8086bee
ripemd-160 41ba2fc5a5a384eee37b5cbd6c4d34bd7a34a664

81946 as geometric shapes

Circle

Radius = n
Diameter 163892
Circumference 514881.90318214
Area 21096256219.082

Sphere

Radius = n
Volume 2.3050050828385E+15
Surface area 84385024876.327
Circumference 514881.90318214

Square

Length = n
Perimeter 327784
Area 6715146916
Diagonal 115889.14458223

Cube

Length = n
Surface area 40290881496
Volume 550279429178536
Space diagonal 141934.63547704

Equilateral Triangle

Length = n
Perimeter 245838
Area 2907743909.7004
Altitude 70967.31773852

Triangular Pyramid

Length = n
Surface area 2907743909.7004
Volume 64851052653268
Height 38629.714860742