The number 29420
29420 is a composite number with 12 divisors. Its prime factorisation is × 5 × 1471. Divisors (12): 1, 2, 4, 5, 10, 20, 1471, 2942, 5884, 7355, 14710, 29420.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
29420 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
29420 is composite. Its prime factorisation is
- 3
The divisors add up to 61824; without 29420 itself that is 32404, so 29420 is abundant (32404 is more than 29420). Euler's totient φ(29420) = 11760 numbers up to 29420 share no factor with it.
- 4
The digits of 29420 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 103 steps to reach 1.
LaTeX source of the formulas on this page
\[ 29420 = 2^{2} \times 5 \times 1471 \]29420 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 61824 |
| Euler totient φ(n) | 11760 |
| Square | 865536400 |
| Cube | 25464080888000 |
| Square root | 171.522593 (= 2√7355) |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 103 |
| Scientific notation | 2.942 × |
29420 in other forms
| Form | Value |
|---|---|
| In words | twenty-nine thousand four hundred and twenty |
| Binary (base 2) | 111001011101100 |
| Octal (base 8) | 71354 |
| Hexadecimal (base 16) | 72EC |
| Base 3 | 1111100122 |
| As time | 29420 seconds = 8 h 10 min 20 s |
Is 29420 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (29420 ÷ 2 = 14710) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | Yes (29420 ÷ 4 = 7355) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (29420 ÷ 5 = 5884) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (29420 ÷ 10 = 2942) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 29420 a prime number?
No. 29420 = × 5 × 1471, so it is divisible by 2.
What are the factors of 29420?
1, 2, 4, 5, 10, 20, 1471, 2942, 5884, 7355, 14710, 29420.
What is 29420 in binary?
111001011101100 (hexadecimal 72EC, octal 71354).
What is the square root of 29420?
About 171.5226, exactly 2√7355.
Is 29420 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 29420?
It is a composite number with 12 divisors.