The number 20329
20329 is a composite number with 4 divisors. Its prime factorisation is 29 × 701. Divisors (4): 1, 29, 701, 20329.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 20329: a semiprime: 29 × 701, the product of two primes.
- 2
20329 is composite. Its prime factorisation is
- 3
The divisors add up to 21060; without 20329 itself that is 731, so 20329 is deficient (731 is less than 20329). Euler's totient φ(20329) = 19600 numbers up to 20329 share no factor with it.
- 4
The digits of 20329 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 74 steps to reach 1.
LaTeX source of the formulas on this page
\[ 20329 = 29 \times 701 \]
20329 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 21060 |
| Euler totient φ(n) | 19600 |
| Square | 413268241 |
| Cube | 8401330071289 |
| Square root | 142.579802 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 74 |
| Scientific notation | 2.0329 × |
20329 in other forms
| Form | Value |
|---|---|
| In words | twenty thousand three hundred and twenty-nine |
| Binary (base 2) | 100111101101001 |
| Octal (base 8) | 47551 |
| Hexadecimal (base 16) | 4F69 |
| Base 3 | 1000212221 |
| As time | 20329 seconds = 5 h 38 min 49 s |
Is 20329 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 | No (remainder 1) | 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 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 20329 a prime number?
No. 20329 = 29 × 701, so it is divisible by 29.
What are the factors of 20329?
1, 29, 701, 20329.
What is 20329 in binary?
100111101101001 (hexadecimal 4F69, octal 47551).
What is the square root of 20329?
About 142.5798.
Is 20329 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 20329?
20329 is a semiprime: 29 × 701, the product of two primes.