20385 (number)

20385 is an odd 5-digits composite number following 20384 and preceding 20386. In scientific notation, it is written as 2.0385 × 10^4. The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors. There are 10800 positive integers (up to 20385) that are relatively prime to 20385.

Interesting facts

Basic properties

Name

Name twenty thousand three hundred eighty-five

Notation

Scientific notation 2.0385 × 10^4
Engineering notation 2.0385 × 10^3

Prime Factorization of 20385

Prime Factorization 45 × 3 × 151

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20385
Product of the distinct prime numbers

The prime factorization of 20385 is 45 × 3 × 151. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 2, 23, 77, 574, 405, 1256, 6087, 35933, 48238, 632451, 225568, 7517358, 5768836, 58399836, 35315975, 870299518, 538260483, 7996955713, 5094002422

Basic calculations (n = 20385)

Multiplication

n×y
n×2 40770
n×3 61155
n×4 81540
n×5 101925

Division

n÷y
n÷2 10192.5
n÷3 6795
n÷3 5096.25
n÷5 4077

Exponentiation

ny
n2 415548225
n3 8470950566625
n4 172680327300650625
n5 3.5200884720238E+21

Nth Root

y√n
2√n 142.77604841149
3√n 27.317245473704
4√n 11.948893187718
5√n 7.2754882415827

Divisors of 20385

1, 3, 45, 135, 151, 453, 6795, 20385

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 -20384
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 20385 can be divided by 8 positive divisors. The sum of these divisors (counting 20385) is 1, the average is 0.125.

Base conversion 20385

Base System Value
2 Binary 100111110100001
3 Ternary 1000222000
4 Quaternary 10332201
5 Quinary 1123020
6 Senary 234213
8 Octal 47641
10 Decimal 20385
12 Duodecimal b969
16 Hexadecimal 4fa1
20 Vigesimal 2aj5
36 Base36 fq9

Cryptographic Hash Functions

md5 fede879a162ae72bf64b942ac5ac50cc
sha1 4255d5f4f13f32322d04fc6a1b95063c6fb7b094
sha256 a1909e5ceab0602ffe6d1bdf073b3ea2c5b0bf1d35574004d7935d69a92e9400
sha512 6780bf8fd20a90d0ab330be612786f3c2ca6093f1175abd3eb5faea92c5b007907d494634ad08b3bc089c39dc7243166fe404e82b72e9da331bcc3f195bc4e23
ripemd-160 7bd29b8b6e789f80d88b582fba1ec645aa36bb4a

20385 as geometric shapes

Circle

Radius = n
Diameter 40770
Circumference 128082.73248686
Area 1305483250.8723

Sphere

Radius = n
Volume 35483034758709
Surface area 5221933003.4891
Circumference 128082.73248686

Square

Length = n
Perimeter 81540
Area 415548225
Diagonal 28828.743468976

Cube

Length = n
Surface area 2493289350
Volume 8470950566625
Space diagonal 35307.855712292

Equilateral Triangle

Length = n
Perimeter 61155
Area 179937659.67377
Altitude 17653.927856146

Triangular Pyramid

Length = n
Surface area 179937659.67377
Volume 998311098126.09
Height 9609.5811563252