The number 21334
21334 is a composite number with 4 divisors. Its prime factorisation is 2 × 10667. Divisors (4): 1, 2, 10667, 21334.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 21334: a semiprime: 2 × 10667, the product of two primes.
- 2
21334 is composite. Its prime factorisation is
- 3
The divisors add up to 32004; without 21334 itself that is 10670, so 21334 is deficient (10670 is less than 21334). Euler's totient φ(21334) = 10666 numbers up to 21334 share no factor with it.
- 4
The digits of 21334 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 149 steps to reach 1.
LaTeX source of the formulas on this page
\[ 21334 = 2 \times 10667 \]
21334 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 32004 |
| Euler totient φ(n) | 10666 |
| Square | 455139556 |
| Cube | 9709947287704 |
| Square root | 146.061631 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 149 |
| Scientific notation | 2.1334 × |
21334 in other forms
| Form | Value |
|---|---|
| In words | twenty-one thousand three hundred and thirty-four |
| Binary (base 2) | 101001101010110 |
| Octal (base 8) | 51526 |
| Hexadecimal (base 16) | 5356 |
| Base 3 | 1002021011 |
| As time | 21334 seconds = 5 h 55 min 34 s |
Is 21334 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (21334 ÷ 2 = 10667) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 21334 a prime number?
No. 21334 = 2 × 10667, so it is divisible by 2.
What are the factors of 21334?
1, 2, 10667, 21334.
What is 21334 in binary?
101001101010110 (hexadecimal 5356, octal 51526).
What is the square root of 21334?
About 146.0616.
Is 21334 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 21334?
21334 is a semiprime: 2 × 10667, the product of two primes.