21493 (number)

21493 is an odd 5-digits prime number following 21492 and preceding 21494. In scientific notation, it is written as 2.1493 × 10^4. The sum of its digits is 19. It has a total of 1 prime factors and 2 positive divisors. There are 21492 positive integers (up to 21493) that are relatively prime to 21493.

Interesting facts

Basic properties

Name

Name twenty-one thousand four hundred ninety-three

Notation

Scientific notation 2.1493 × 10^4
Engineering notation 2.1493 × 10^3

Prime Factorization of 21493

Prime Factorization 21493

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21493
Product of the distinct prime numbers

The prime factorization of 21493 is 21493. Since it has a total of 1 prime factors.

Most popular turbo-numbers

2, 5, 18, 75, 7, 590, 5233, 6323, 5669, 45197, 580215, 308712, 6961151, 9436698, 73876189, 60361053, 299791057, 989808511, 9945825307, 5947411527

Basic calculations (n = 21493)

Multiplication

n×y
n×2 42986
n×3 64479
n×4 85972
n×5 107465

Division

n÷y
n÷2 10746.5
n÷3 7164.3333333333
n÷3 5373.25
n÷5 4298.6

Exponentiation

ny
n2 461949049
n3 9928670910157
n4 213396923872004401
n5 4.586540084781E+21

Nth Root

y√n
2√n 146.60491124106
3√n 27.80347074656
4√n 12.108051504725
5√n 7.352912666933

Divisors of 21493

1, 21493

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21494
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10747
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 146.60832172834
Returns the nth root of the product of n divisors
H Harmonic Mean 1.999906950777
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21493 can be divided by 2 positive divisors. The sum of these divisors (counting 21493) is 21494, the average is 10747.

Base conversion 21493

Base System Value
2 Binary 101001111110101
3 Ternary 1002111001
4 Quaternary 11033311
5 Quinary 1141433
6 Senary 243301
8 Octal 51765
10 Decimal 21493
12 Duodecimal 10531
16 Hexadecimal 53f5
20 Vigesimal 2ded
36 Base36 gl1

Cryptographic Hash Functions

md5 f320f1feb26db7e64dcd0f648a6d6738
sha1 438fb9d841578771ef542e58f4b30de0270a527e
sha256 229a4522ce3d2c2924839c7552b368c8ca5f1b127e8a2574ee5b47e848a2ea78
sha512 44bf2ee793dfc7a8367eda64c685854dc93f3669804293bfe3327e495a49d26fcd4c884b1967a8602746fb62d8167496646facf4835e929ca1e7049ab970b985
ripemd-160 f57957151522dedd02e80a79d3fa0d1ffc576453

21493 as geometric shapes

Circle

Radius = n
Diameter 42986
Circumference 135044.50180721
Area 1451255738.6712

Sphere

Radius = n
Volume 41589119455013
Surface area 5805022954.6848
Circumference 135044.50180721

Square

Length = n
Perimeter 85972
Area 461949049
Diagonal 30395.692096085

Cube

Length = n
Surface area 2771694294
Volume 9928670910157
Space diagonal 37226.968007078

Equilateral Triangle

Length = n
Perimeter 64479
Area 200029805.84403
Altitude 18613.484003539

Triangular Pyramid

Length = n
Surface area 200029805.84403
Volume 1170105088123.6
Height 10131.897365362