20605 (number)

20605 is an odd 5-digits composite number following 20604 and preceding 20606. In scientific notation, it is written as 2.0605 × 10^4. The sum of its digits is 13. It has a total of 2 prime factors and 4 positive divisors. There are 15168 positive integers (up to 20605) that are relatively prime to 20605.

Interesting facts

Basic properties

Name

Name twenty thousand six hundred five

Notation

Scientific notation 2.0605 × 10^4
Engineering notation 2.0605 × 10^3

Prime Factorization of 20605

Prime Factorization 65 × 317

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20605
Product of the distinct prime numbers

The prime factorization of 20605 is 65 × 317. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 2, 9, 11, 149, 356, 5079, 3312, 42047, 96556, 728790, 124957, 1560838, 1829308, 25391150, 26999224, 483488165, 446470163, 8560993177, 7940962062

Basic calculations (n = 20605)

Multiplication

n×y
n×2 41210
n×3 61815
n×4 82420
n×5 103025

Division

n÷y
n÷2 10302.5
n÷3 6868.3333333333
n÷3 5151.25
n÷5 4121

Exponentiation

ny
n2 424566025
n3 8748182945125
n4 180256309584300625
n5 3.7141812589845E+21

Nth Root

y√n
2√n 143.54441821262
3√n 27.415165561557
4√n 11.981002387639
5√n 7.2911246620755

Divisors of 20605

1, 65, 317, 20605

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 -20604
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 20605 can be divided by 4 positive divisors. The sum of these divisors (counting 20605) is 1, the average is 0.25.

Base conversion 20605

Base System Value
2 Binary 101000001111101
3 Ternary 1001021011
4 Quaternary 11001331
5 Quinary 1124410
6 Senary 235221
8 Octal 50175
10 Decimal 20605
12 Duodecimal bb11
16 Hexadecimal 507d
20 Vigesimal 2ba5
36 Base36 fwd

Cryptographic Hash Functions

md5 1b4f877baadb44b36ff73a44e05ebd4c
sha1 24b5e6cdfdca15899889099659a6898ad1b128e5
sha256 df0dd71b0eebd310122d6090e0556f1217a9b0f8988940e53f4c2a4e51e075e1
sha512 5cd70d2f8ba5d27e17a00ba320a4c680e97534c0dacc55e278c193ae9761655085f975618ff4e1e0535ff1b5a834c5c19490f859f179047173533aa6af30a89d
ripemd-160 e841a3176a9040da03f737ad3645c4f1b39e20af

20605 as geometric shapes

Circle

Radius = n
Diameter 41210
Circumference 129465.03325444
Area 1333813505.1038

Sphere

Radius = n
Volume 36644303030219
Surface area 5335254020.4153
Circumference 129465.03325444

Square

Length = n
Perimeter 82420
Area 424566025
Diagonal 29139.870452698

Cube

Length = n
Surface area 2547396150
Volume 8748182945125
Space diagonal 35688.906889957

Equilateral Triangle

Length = n
Perimeter 61815
Area 183842481.61689
Altitude 17844.453444978

Triangular Pyramid

Length = n
Surface area 183842481.61689
Volume 1030983247259.7
Height 9713.2901508992