The number 20733
20733 is a composite number with 4 divisors. Its prime factorisation is 3 × 6911. Divisors (4): 1, 3, 6911, 20733.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 20733: a semiprime: 3 × 6911, the product of two primes.
- 2
20733 is composite. Its prime factorisation is
- 3
The divisors add up to 27648; without 20733 itself that is 6915, so 20733 is deficient (6915 is less than 20733). Euler's totient φ(20733) = 13820 numbers up to 20733 share no factor with it.
- 4
The digits of 20733 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 56 steps to reach 1.
LaTeX source of the formulas on this page
\[ 20733 = 3 \times 6911 \]
20733 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27648 |
| Euler totient φ(n) | 13820 |
| Square | 429857289 |
| Cube | 8912231172837 |
| Square root | 143.989583 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 56 |
| Scientific notation | 2.0733 × |
20733 in other forms
| Form | Value |
|---|---|
| In words | twenty thousand seven hundred and thirty-three |
| Binary (base 2) | 101000011111101 |
| Octal (base 8) | 50375 |
| Hexadecimal (base 16) | 50FD |
| Base 3 | 1001102220 |
| As time | 20733 seconds = 5 h 45 min 33 s |
Is 20733 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (20733 ÷ 3 = 6911) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 20733 a prime number?
No. 20733 = 3 × 6911, so it is divisible by 3.
What are the factors of 20733?
1, 3, 6911, 20733.
What is 20733 in binary?
101000011111101 (hexadecimal 50FD, octal 50375).
What is the square root of 20733?
About 143.9896.
Is 20733 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 20733?
20733 is a semiprime: 3 × 6911, the product of two primes.