20691 (number)

20691 is an odd 5-digits composite number following 20690 and preceding 20692. In scientific notation, it is written as 2.0691 × 10^4. The sum of its digits is 18. It has a total of 5 prime factors and 18 positive divisors. There are 11880 positive integers (up to 20691) that are relatively prime to 20691.

Interesting facts

Basic properties

Name

Name twenty thousand six hundred ninety-one

Notation

Scientific notation 2.0691 × 10^4
Engineering notation 2.0691 × 10^3

Prime Factorization of 20691

Prime Factorization 3 × 3 × 11 × 11 × 19

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 627
Product of the distinct prime numbers

The prime factorization of 20691 is 3 × 3 × 11 × 11 × 19. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 2, 82, 2, 943, 40, 3216, 1741, 88925, 72114, 883061, 772822, 6899819, 6118660, 33058711, 50914339, 346109928, 376437853, 9512563993, 9900850617

Basic calculations (n = 20691)

Multiplication

n×y
n×2 41382
n×3 62073
n×4 82764
n×5 103455

Division

n÷y
n÷2 10345.5
n÷3 6897
n÷3 5172.75
n÷5 4138.2

Exponentiation

ny
n2 428117481
n3 8858178799371
n4 183284577537785361
n5 3.7923411938343E+21

Nth Root

y√n
2√n 143.84366513684
3√n 27.453253916674
4√n 11.993484278426
5√n 7.2972007843611

Divisors of 20691

1, 3, 9, 11, 19, 33, 57, 99, 121, 171, 209, 363, 627, 1089, 1881, 2299, 6897, 20691

18 divisors

τ Total Divisors 18
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20690
Sum of the proper positive divisors of n
A Arithmetic Mean 0.055555555555556
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 18
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20691 can be divided by 18 positive divisors. The sum of these divisors (counting 20691) is 1, the average is 0.055555555555556.

Base conversion 20691

Base System Value
2 Binary 101000011010011
3 Ternary 1001101100
4 Quaternary 11003103
5 Quinary 1130231
6 Senary 235443
8 Octal 50323
10 Decimal 20691
12 Duodecimal bb83
16 Hexadecimal 50d3
20 Vigesimal 2beb
36 Base36 fyr

Cryptographic Hash Functions

md5 e900e23359023d5eb02b90a0933dc43d
sha1 0bf8f647da541312b58bcf0ba6129859c47372f0
sha256 e65699d13492705cc52d9194402fbca1af88d578296886e1513a7806583a7b37
sha512 13555bca9223df3cdba590bbfede3417cbdccc7662b8f34fb985449f6ec17c19dec240b16de6b9d2d12786ecea67bd84d68770f93a5cebf17d8d00cd74da34ce
ripemd-160 90d81acb5ad101fe4e2da49ceb394a82dbfc2838

20691 as geometric shapes

Circle

Radius = n
Diameter 41382
Circumference 130005.38719085
Area 1344970733.183

Sphere

Radius = n
Volume 37105052587052
Surface area 5379882932.7319
Circumference 130005.38719085

Square

Length = n
Perimeter 82764
Area 428117481
Diagonal 29261.492819062

Cube

Length = n
Surface area 2568704886
Volume 8858178799371
Space diagonal 35837.863259408

Equilateral Triangle

Length = n
Perimeter 62073
Area 185380307.1751
Altitude 17918.931629704

Triangular Pyramid

Length = n
Surface area 185380307.1751
Volume 1043946382999.7
Height 9753.8309396872