20581 (number)

20581 is an odd 5-digits composite number following 20580 and preceding 20582. In scientific notation, it is written as 2.0581 × 10^4. The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors. There are 18700 positive integers (up to 20581) that are relatively prime to 20581.

Interesting facts

Basic properties

Name

Name twenty thousand five hundred eighty-one

Notation

Scientific notation 2.0581 × 10^4
Engineering notation 2.0581 × 10^3

Prime Factorization of 20581

Prime Factorization 11 × 1871

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20581
Product of the distinct prime numbers

The prime factorization of 20581 is 11 × 1871. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 3, 35, 10, 572, 717, 1222, 4824, 99258, 68042, 272541, 189687, 4129828, 4643471, 76211455, 9978394, 380104542, 809047095, 3157182435, 5077458739

Basic calculations (n = 20581)

Multiplication

n×y
n×2 41162
n×3 61743
n×4 82324
n×5 102905

Division

n÷y
n÷2 10290.5
n÷3 6860.3333333333
n÷3 5145.25
n÷5 4116.2

Exponentiation

ny
n2 423577561
n3 8717649782941
n4 179417950182708721
n5 3.6926008327103E+21

Nth Root

y√n
2√n 143.4607960385
3√n 27.404517343537
4√n 11.977512097197
5√n 7.2894253796056

Divisors of 20581

1, 11, 1871, 20581

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 -20580
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 20581 can be divided by 4 positive divisors. The sum of these divisors (counting 20581) is 1, the average is 0.25.

Base conversion 20581

Base System Value
2 Binary 101000001100101
3 Ternary 1001020021
4 Quaternary 11001211
5 Quinary 1124311
6 Senary 235141
8 Octal 50145
10 Decimal 20581
12 Duodecimal bab1
16 Hexadecimal 5065
20 Vigesimal 2b91
36 Base36 fvp

Cryptographic Hash Functions

md5 93dbe3b58a1bafbb7d581d8244dcaef2
sha1 a494e9212f8a74b6b035f3e88964f2cfc9e5c546
sha256 9a7846c3382d619ce35dfb5c02240c14d50af2a53b6ad38464abb1a27ead5a4e
sha512 783ce3231c719505ecf614474886b9e055777463459604fb638eb960c90e2f93d77ca73c6f3d15e9718e77564823e7cd2ce1bdecaadace5e15c7a7d438d46334
ripemd-160 ae938d335f25668142f2a763cdf84d083bc763b1

20581 as geometric shapes

Circle

Radius = n
Diameter 41162
Circumference 129314.23680706
Area 1330708153.8631

Sphere

Radius = n
Volume 36516406019541
Surface area 5322832615.4523
Circumference 129314.23680706

Square

Length = n
Perimeter 82324
Area 423577561
Diagonal 29105.929327201

Cube

Length = n
Surface area 2541465366
Volume 8717649782941
Space diagonal 35647.337670575

Equilateral Triangle

Length = n
Perimeter 61743
Area 183414464.14953
Altitude 17823.668835288

Triangular Pyramid

Length = n
Surface area 183414464.14953
Volume 1027384879587.8
Height 9701.9764424002