20745 (number)

20745 is an odd 5-digits composite number following 20744 and preceding 20746. In scientific notation, it is written as 2.0745 × 10^4. The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors. There are 11040 positive integers (up to 20745) that are relatively prime to 20745.

Interesting facts

Basic properties

Name

Name twenty thousand seven hundred forty-five

Notation

Scientific notation 2.0745 × 10^4
Engineering notation 2.0745 × 10^3

Prime Factorization of 20745

Prime Factorization 3 × 3 × 461 × 5

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 6915
Product of the distinct prime numbers

The prime factorization of 20745 is 3 × 3 × 461 × 5. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 10, 99, 2, 552, 474, 3355, 8530, 98122, 47477, 843822, 497995, 2733508, 4809636, 13786778, 38361708, 238893167, 799770779, 3762566826, 8627307126

Basic calculations (n = 20745)

Multiplication

n×y
n×2 41490
n×3 62235
n×4 82980
n×5 103725

Division

n÷y
n÷2 10372.5
n÷3 6915
n÷3 5186.25
n÷5 4149

Exponentiation

ny
n2 430355025
n3 8927714993625
n4 185205447542750625
n5 3.8420870092744E+21

Nth Root

y√n
2√n 144.03124660989
3√n 27.477115948606
4√n 12.001301871459
5√n 7.3010057055837

Divisors of 20745

1, 3, 5, 9, 15, 45, 461, 1383, 2305, 4149, 6915, 20745

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20744
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20745 can be divided by 12 positive divisors. The sum of these divisors (counting 20745) is 1, the average is 0.083333333333333.

Base conversion 20745

Base System Value
2 Binary 101000100001001
3 Ternary 1001110100
4 Quaternary 11010021
5 Quinary 1130440
6 Senary 240013
8 Octal 50411
10 Decimal 20745
12 Duodecimal 10009
16 Hexadecimal 5109
20 Vigesimal 2bh5
36 Base36 g09

Cryptographic Hash Functions

md5 a8884e9c752930207aeea09cc88b3988
sha1 adf9f98f9467efe404f055feb14ed41ac56e4e5c
sha256 ebd55024642f59dda992032224e38310c866e04836bf52969c291fade6e23af8
sha512 a2ccbc2d31fba5f33c905849239d25ebc70a23ab7aabf7a800d113eaa6eee57ac12a41b254e2cf985682f326f24e93a859a09eb8a6a17281efbc7d65bc412af1
ripemd-160 fe903b3a29ba7f7a09974d81cd35acf803c3d679

20745 as geometric shapes

Circle

Radius = n
Diameter 41490
Circumference 130344.67919744
Area 1352000184.9755

Sphere

Radius = n
Volume 37396325116421
Surface area 5408000739.9018
Circumference 130344.67919744

Square

Length = n
Perimeter 82980
Area 430355025
Diagonal 29337.86035143

Cube

Length = n
Surface area 2582130150
Volume 8927714993625
Space diagonal 35931.394003016

Equilateral Triangle

Length = n
Perimeter 62235
Area 186349192.14814
Altitude 17965.697001508

Triangular Pyramid

Length = n
Surface area 186349192.14814
Volume 1052141302082.2
Height 9779.28678381