21897 (number)

21897 is an odd 5-digits composite number following 21896 and preceding 21898. In scientific notation, it is written as 2.1897 × 10^4. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 14580 positive integers (up to 21897) that are relatively prime to 21897.

Interesting facts

Basic properties

Name

Name twenty-one thousand eight hundred ninety-seven

Notation

Scientific notation 2.1897 × 10^4
Engineering notation 2.1897 × 10^3

Prime Factorization of 21897

Prime Factorization 9 × 3 × 811

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21897
Product of the distinct prime numbers

The prime factorization of 21897 is 9 × 3 × 811. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 10, 54, 2, 524, 797, 801, 7147, 14603, 41135, 663285, 847468, 789798, 5415042, 19436472, 5625869, 76164352, 346007750, 8109771777, 4777374582

Basic calculations (n = 21897)

Multiplication

n×y
n×2 43794
n×3 65691
n×4 87588
n×5 109485

Division

n÷y
n÷2 10948.5
n÷3 7299
n÷3 5474.25
n÷5 4379.4

Exponentiation

ny
n2 479478609
n3 10499143101273
n4 229899736488574881
n5 5.0341145298903E+21

Nth Root

y√n
2√n 147.97634946166
3√n 27.976596089458
4√n 12.164552990622
5√n 7.380349417409

Divisors of 21897

1, 3, 9, 27, 811, 2433, 7299, 21897

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 -21896
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 21897 can be divided by 8 positive divisors. The sum of these divisors (counting 21897) is 1, the average is 0.125.

Base conversion 21897

Base System Value
2 Binary 101010110001001
3 Ternary 1010001000
4 Quaternary 11112021
5 Quinary 1200042
6 Senary 245213
8 Octal 52611
10 Decimal 21897
12 Duodecimal 10809
16 Hexadecimal 5589
20 Vigesimal 2eeh
36 Base36 gw9

Cryptographic Hash Functions

md5 171a559fc57627e85f85fa328bfb59f8
sha1 01451beb4592c52a9246d041e553d58135e70ce0
sha256 ed20dd00bf7d46e025c94f69e3d884ab10c60614f0a377658fd3d6aa2fe5ffb8
sha512 7ac8d2bed0e296261b92271353c8fdee5936a70c95ab46c36cdec002afc54216dc755d841e48a953f8f4f832c1668774b5ae471458c9fcc33fea25c498314e7f
ripemd-160 fcb624a1f0c00a7630717e0b2de516a15caaf412

21897 as geometric shapes

Circle

Radius = n
Diameter 43794
Circumference 137582.90867131
Area 1506326475.5879

Sphere

Radius = n
Volume 43978707781263
Surface area 6025305902.3514
Circumference 137582.90867131

Square

Length = n
Perimeter 87588
Area 479478609
Diagonal 30967.034375284

Cube

Length = n
Surface area 2876871654
Volume 10499143101273
Space diagonal 37926.716533336

Equilateral Triangle

Length = n
Perimeter 65691
Area 207620327.98261
Altitude 18963.358266668

Triangular Pyramid

Length = n
Surface area 207620327.98261
Volume 1237335880593
Height 10322.344791761