20855 (number)

20855 is an odd 5-digits composite number following 20854 and preceding 20856. In scientific notation, it is written as 2.0855 × 10^4. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 16128 positive integers (up to 20855) that are relatively prime to 20855.

Interesting facts

Basic properties

Name

Name twenty thousand eight hundred fifty-five

Notation

Scientific notation 2.0855 × 10^4
Engineering notation 2.0855 × 10^3

Prime Factorization of 20855

Prime Factorization 5 × 43 × 97

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20855
Product of the distinct prime numbers

The prime factorization of 20855 is 5 × 43 × 97. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 6, 57, 57, 575, 172, 8068, 9475, 55361, 20131, 221027, 983307, 6612253, 6649000, 10808097, 85042728, 648320150, 513000683, 7142299693, 5586148655

Basic calculations (n = 20855)

Multiplication

n×y
n×2 41710
n×3 62565
n×4 83420
n×5 104275

Division

n÷y
n÷2 10427.5
n÷3 6951.6666666667
n÷3 5213.75
n÷5 4171

Exponentiation

ny
n2 434931025
n3 9070486526375
n4 189164996507550625
n5 3.945036002165E+21

Nth Root

y√n
2√n 144.4126033281
3√n 27.525596003487
4√n 12.017179508025
5√n 7.3087320264791

Divisors of 20855

1, 5, 43, 97, 215, 485, 4171, 20855

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20854
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20855 can be divided by 8 positive divisors. The sum of these divisors (counting 20855) is 1, the average is 0.125.

Base conversion 20855

Base System Value
2 Binary 101000101110111
3 Ternary 1001121102
4 Quaternary 11011313
5 Quinary 1131410
6 Senary 240315
8 Octal 50567
10 Decimal 20855
12 Duodecimal 1009b
16 Hexadecimal 5177
20 Vigesimal 2c2f
36 Base36 g3b

Cryptographic Hash Functions

md5 5f679cac1ebdeda165eb49cc3015fd9e
sha1 236df1c52d4fb5fa97788179906d2f1e103c5a31
sha256 87b4f66c45dc9784ae58954f057bd790eb5218795d662bc55354ddb9bf4fb085
sha512 ce299798b78f0f84e8c85f134da0fa12bd2ab8ed593ec070a92060147925233eecf0ffd8b129dcc31d9388b7eec5796d7df3f0195e389411a551c46b925480a2
ripemd-160 7dbacacf1dca0de7b029dccb6525ae3ca5762695

20855 as geometric shapes

Circle

Radius = n
Diameter 41710
Circumference 131035.82958123
Area 1366376112.9583

Sphere

Radius = n
Volume 37994365114327
Surface area 5465504451.8331
Circumference 131035.82958123

Square

Length = n
Perimeter 83420
Area 434931025
Diagonal 29493.423843291

Cube

Length = n
Surface area 2609586150
Volume 9070486526375
Space diagonal 36121.919591849

Equilateral Triangle

Length = n
Perimeter 62565
Area 188330658.272
Altitude 18060.959795924

Triangular Pyramid

Length = n
Surface area 188330658.272
Volume 1068967088576.8
Height 9831.141281097