21895 (number)

21895 is an odd 5-digits composite number following 21894 and preceding 21896. In scientific notation, it is written as 2.1895 × 10^4. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 16800 positive integers (up to 21895) that are relatively prime to 21895.

Interesting facts

Basic properties

Name

Name twenty-one thousand eight hundred ninety-five

Notation

Scientific notation 2.1895 × 10^4
Engineering notation 2.1895 × 10^3

Prime Factorization of 21895

Prime Factorization 29 × 5 × 151

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21895
Product of the distinct prime numbers

The prime factorization of 21895 is 29 × 5 × 151. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 6, 63, 98, 502, 940, 1410, 4547, 16486, 65491, 946312, 723630, 6666916, 1002603, 87752577, 14551606, 324209183, 864633687, 3369634247, 1494864926

Basic calculations (n = 21895)

Multiplication

n×y
n×2 43790
n×3 65685
n×4 87580
n×5 109475

Division

n÷y
n÷2 10947.5
n÷3 7298.3333333333
n÷3 5473.75
n÷5 4379

Exponentiation

ny
n2 479391025
n3 10496266492375
n4 229815754850550625
n5 5.0318159524528E+21

Nth Root

y√n
2√n 147.96959147068
3√n 27.975744300083
4√n 12.164275213537
5√n 7.3802145931121

Divisors of 21895

1, 5, 29, 145, 151, 755, 4379, 21895

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 -21894
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 21895 can be divided by 8 positive divisors. The sum of these divisors (counting 21895) is 1, the average is 0.125.

Base conversion 21895

Base System Value
2 Binary 101010110000111
3 Ternary 1010000221
4 Quaternary 11112013
5 Quinary 1200040
6 Senary 245211
8 Octal 52607
10 Decimal 21895
12 Duodecimal 10807
16 Hexadecimal 5587
20 Vigesimal 2eef
36 Base36 gw7

Cryptographic Hash Functions

md5 280433a363394d3a259d0d1044b86afc
sha1 f0bfcff43fc122090552d97ac8d14f6d8cebc15f
sha256 add08e6ee599973a79b47ad6f3a87f9058a79908a3497c0b6371ffdbadedcfd6
sha512 23a27a4e81434fe5a120b7e2709d114ee2d158d943e64dbc7531b83a0d7fabfbb813dde64e234ddd0d3feb4d67f0671f69ac3290a7361fc182b98b8b2a559837
ripemd-160 7359f8279d8ced3d62c02088af81080be0a13d00

21895 as geometric shapes

Circle

Radius = n
Diameter 43790
Circumference 137570.3423007
Area 1506051322.3369

Sphere

Radius = n
Volume 43966658270088
Surface area 6024205289.3475
Circumference 137570.3423007

Square

Length = n
Perimeter 87580
Area 479391025
Diagonal 30964.205948159

Cube

Length = n
Surface area 2876346150
Volume 10496266492375
Space diagonal 37923.252431721

Equilateral Triangle

Length = n
Perimeter 65685
Area 207582402.99813
Altitude 18961.62621586

Triangular Pyramid

Length = n
Surface area 207582402.99813
Volume 1236996868983.2
Height 10321.40198272