The number 29138
29138 is a composite number with 8 divisors. Its prime factorisation is 2 × 17 × 857. Divisors (8): 1, 2, 17, 34, 857, 1714, 14569, 29138.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
29138 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
29138 is composite. Its prime factorisation is
- 3
The divisors add up to 46332; without 29138 itself that is 17194, so 29138 is deficient (17194 is less than 29138). Euler's totient φ(29138) = 13696 numbers up to 29138 share no factor with it.
- 4
The digits of 29138 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 59 steps to reach 1.
LaTeX source of the formulas on this page
\[ 29138 = 2 \times 17 \times 857 \]
29138 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 46332 |
| Euler totient φ(n) | 13696 |
| Square | 849023044 |
| Cube | 24738833456072 |
| Square root | 170.698565 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 59 |
| Scientific notation | 2.9138 × |
29138 in other forms
| Form | Value |
|---|---|
| In words | twenty-nine thousand one hundred and thirty-eight |
| Binary (base 2) | 111000111010010 |
| Octal (base 8) | 70722 |
| Hexadecimal (base 16) | 71D2 |
| Base 3 | 1110222012 |
| As time | 29138 seconds = 8 h 5 min 38 s |
Is 29138 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (29138 ÷ 2 = 14569) | 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 | No (remainder 2) | 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 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 29138 a prime number?
No. 29138 = 2 × 17 × 857, so it is divisible by 2.
What are the factors of 29138?
1, 2, 17, 34, 857, 1714, 14569, 29138.
What is 29138 in binary?
111000111010010 (hexadecimal 71D2, octal 70722).
What is the square root of 29138?
About 170.6986.
Is 29138 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 29138?
It is a composite number with 8 divisors.