## 21746

21,746 (twenty-one thousand seven hundred forty-six) is an even five-digits composite number following 21745 and preceding 21747. In scientific notation, it is written as 2.1746 × 104. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 10,660 positive integers (up to 21746) that are relatively prime to 21746.

## Basic properties

• Is Prime? No
• Number parity Even
• Number length 5
• Sum of Digits 20
• Digital Root 2

## Name

Short name 21 thousand 746 twenty-one thousand seven hundred forty-six

## Notation

Scientific notation 2.1746 × 104 21.746 × 103

## Prime Factorization of 21746

Prime Factorization 2 × 83 × 131

Composite number
Distinct Factors Total Factors Radical ω(n) 3 Total number of distinct prime factors Ω(n) 3 Total number of prime factors rad(n) 21746 Product of the distinct prime numbers λ(n) -1 Returns the parity of Ω(n), such that λ(n) = (-1)Ω(n) μ(n) -1 Returns: 1, if n has an even number of prime factors (and is square free) −1, if n has an odd number of prime factors (and is square free) 0, if n has a squared prime factor Λ(n) 0 Returns log(p) if n is a power pk of any prime p (for any k >= 1), else returns 0

The prime factorization of 21,746 is 2 × 83 × 131. Since it has a total of 3 prime factors, 21,746 is a composite number.

## Divisors of 21746

1, 2, 83, 131, 166, 262, 10873, 21746

8 divisors

 Even divisors 4 4 2 2
Total Divisors Sum of Divisors Aliquot Sum τ(n) 8 Total number of the positive divisors of n σ(n) 33264 Sum of all the positive divisors of n s(n) 11518 Sum of the proper positive divisors of n A(n) 4158 Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) G(n) 147.465 Returns the nth root of the product of n divisors H(n) 5.22992 Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21,746 can be divided by 8 positive divisors (out of which 4 are even, and 4 are odd). The sum of these divisors (counting 21,746) is 33,264, the average is 4,158.

## Other Arithmetic Functions (n = 21746)

1 φ(n) n
Euler Totient Carmichael Lambda Prime Pi φ(n) 10660 Total number of positive integers not greater than n that are coprime to n λ(n) 5330 Smallest positive number such that aλ(n) ≡ 1 (mod n) for all a coprime to n π(n) ≈ 2441 Total number of primes less than or equal to n r2(n) 0 The number of ways n can be represented as the sum of 2 squares

There are 10,660 positive integers (less than 21,746) that are coprime with 21,746. And there are approximately 2,441 prime numbers less than or equal to 21,746.

## Divisibility of 21746

 m n mod m 2 3 4 5 6 7 8 9 0 2 2 1 2 4 2 2

The number 21,746 is divisible by 2.

## Classification of 21746

• Arithmetic
• Deficient

### Expressible via specific sums

• Polite
• Non-hypotenuse

• Square Free

• Sphenic

## Base conversion (21746)

Base System Value
2 Binary 101010011110010
3 Ternary 1002211102
4 Quaternary 11103302
5 Quinary 1143441
6 Senary 244402
8 Octal 52362
10 Decimal 21746
12 Duodecimal 10702
20 Vigesimal 2e76
36 Base36 gs2

## Basic calculations (n = 21746)

### Multiplication

n×i
 n×2 43492 65238 86984 108730

### Division

ni
 n⁄2 10873 7248.67 5436.5 4349.2

### Exponentiation

ni
 n2 472888516 10283433668936 223623548564682256 4862917687087580338976

### Nth Root

i√n
 2√n 147.465 27.9121 12.1435 7.37014

## 21746 as geometric shapes

### Circle

 Diameter 43492 136634 1.48562e+09

### Sphere

 Volume 4.30751e+13 5.94249e+09 136634

### Square

Length = n
 Perimeter 86984 4.72889e+08 30753.5

### Cube

Length = n
 Surface area 2.83733e+09 1.02834e+13 37665.2

### Equilateral Triangle

Length = n
 Perimeter 65238 2.04767e+08 18832.6

### Triangular Pyramid

Length = n
 Surface area 8.19067e+08 1.21191e+12 17755.5

## Cryptographic Hash Functions

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