21397 (number)

21397 is an odd 5-digits prime number following 21396 and preceding 21398. In scientific notation, it is written as 2.1397 × 10^4. The sum of its digits is 22. It has a total of 1 prime factors and 2 positive divisors. There are 21396 positive integers (up to 21397) that are relatively prime to 21397.

Interesting facts

Basic properties

Name

Name twenty-one thousand three hundred ninety-seven

Notation

Scientific notation 2.1397 × 10^4
Engineering notation 2.1397 × 10^3

Prime Factorization of 21397

Prime Factorization 21397

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21397
Product of the distinct prime numbers

The prime factorization of 21397 is 21397. Since it has a total of 1 prime factors.

Most popular turbo-numbers

2, 5, 44, 27, 940, 180, 8737, 5074, 4343, 60136, 935486, 640372, 7964766, 317540, 82070298, 33548756, 823205422, 431303974, 7835391992, 2343659241

Basic calculations (n = 21397)

Multiplication

n×y
n×2 42794
n×3 64191
n×4 85588
n×5 106985

Division

n÷y
n÷2 10698.5
n÷3 7132.3333333333
n÷3 5349.25
n÷5 4279.4

Exponentiation

ny
n2 457831609
n3 9796222937773
n4 209609782199528881
n5 4.4850205097233E+21

Nth Root

y√n
2√n 146.27713423499
3√n 27.762013573846
4√n 12.094508432962
5√n 7.3463324394091

Divisors of 21397

1, 21397

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21398
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10699
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 146.28055236428
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999065333209
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21397 can be divided by 2 positive divisors. The sum of these divisors (counting 21397) is 21398, the average is 10699.

Base conversion 21397

Base System Value
2 Binary 101001110010101
3 Ternary 1002100111
4 Quaternary 11032111
5 Quinary 1141042
6 Senary 243021
8 Octal 51625
10 Decimal 21397
12 Duodecimal 10471
16 Hexadecimal 5395
20 Vigesimal 2d9h
36 Base36 gid

Cryptographic Hash Functions

md5 10112e4e12aa494db03ea2462302d34d
sha1 e76a5164454dfc9b4124849dae210b0181aa7a56
sha256 6589ca24d76baa2376b009c2db047bf1570a4ee7f2e9542eb8cf5fa803ad4acd
sha512 25b22ef5dbad51553d9c66630fd98f8d30246f2c2476ae2b427a8c46b4c33eb1aad906ea8a1aef1862ca767b4e96f40cfa005bc87f85f1069843e9d2afe86343
ripemd-160 69794cde641662b94f536815f3e20b9c719bff49

21397 as geometric shapes

Circle

Radius = n
Diameter 42794
Circumference 134441.31601772
Area 1438320419.4156

Sphere

Radius = n
Volume 41034322685647
Surface area 5753281677.6624
Circumference 134441.31601772

Square

Length = n
Perimeter 85588
Area 457831609
Diagonal 30259.927594097

Cube

Length = n
Surface area 2746989654
Volume 9796222937773
Space diagonal 37060.691129551

Equilateral Triangle

Length = n
Perimeter 64191
Area 198246902.02475
Altitude 18530.345564776

Triangular Pyramid

Length = n
Surface area 198246902.02475
Volume 1154495944885.7
Height 10086.642531366