20961 (number)

20961 is an odd 5-digits composite number following 20960 and preceding 20962. In scientific notation, it is written as 2.0961 × 10^4. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 13056 positive integers (up to 20961) that are relatively prime to 20961.

Interesting facts

Basic properties

Name

Name twenty thousand nine hundred sixty-one

Notation

Scientific notation 2.0961 × 10^4
Engineering notation 2.0961 × 10^3

Prime Factorization of 20961

Prime Factorization 153 × 137

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20961
Product of the distinct prime numbers

The prime factorization of 20961 is 153 × 137. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 6, 98, 28, 280, 378, 4527, 8276, 14648, 4972, 459315, 346956, 1372634, 6129243, 3664378, 33570008, 946429063, 401190812, 2118860359, 6825472712

Basic calculations (n = 20961)

Multiplication

n×y
n×2 41922
n×3 62883
n×4 83844
n×5 104805

Division

n÷y
n÷2 10480.5
n÷3 6987
n÷3 5240.25
n÷5 4192.2

Exponentiation

ny
n2 439363521
n3 9209498763681
n4 193040303585517441
n5 4.046317803456E+21

Nth Root

y√n
2√n 144.77914214416
3√n 27.572152125716
4√n 12.032420460745
5√n 7.3161466061747

Divisors of 20961

1, 137, 153, 20961

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 -20960
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 20961 can be divided by 4 positive divisors. The sum of these divisors (counting 20961) is 1, the average is 0.25.

Base conversion 20961

Base System Value
2 Binary 101000111100001
3 Ternary 1001202100
4 Quaternary 11013201
5 Quinary 1132321
6 Senary 241013
8 Octal 50741
10 Decimal 20961
12 Duodecimal 10169
16 Hexadecimal 51e1
20 Vigesimal 2c81
36 Base36 g69

Cryptographic Hash Functions

md5 d0531daf947fa47ce14609890e1b91a2
sha1 8ad65ff5ded716af6be7cfe3ba60d19e57819735
sha256 bcd51724cb593971e211705d903f501dd94f62696744c2c735dbd5ba2d6e0536
sha512 fc37ca0d88166bf9a232385e76a0d123ec73c24a459e44d99b46549f3d7729803de19ee423957b05318f5874d280633e439699531dcfb65ca85102632b63c7b1
ripemd-160 7579a8864ffb4290c7ba13b7538744da4f8d7cf0

20961 as geometric shapes

Circle

Radius = n
Diameter 41922
Circumference 131701.84722379
Area 1380301209.8289

Sphere

Radius = n
Volume 38576658212299
Surface area 5521204839.3158
Circumference 131701.84722379

Square

Length = n
Perimeter 83844
Area 439363521
Diagonal 29643.330480902

Cube

Length = n
Surface area 2636181126
Volume 9209498763681
Space diagonal 36305.516977451

Equilateral Triangle

Length = n
Perimeter 62883
Area 190249985.34109
Altitude 18152.758488726

Triangular Pyramid

Length = n
Surface area 190249985.34109
Volume 1085349837854.7
Height 9881.1101603008