The number 29471
29471 is a composite number with 4 divisors. Its prime factorisation is 13 × 2267. Divisors (4): 1, 13, 2267, 29471.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 29471: a semiprime: 13 × 2267, the product of two primes.
- 2
29471 is composite. Its prime factorisation is
- 3
The divisors add up to 31752; without 29471 itself that is 2281, so 29471 is deficient (2281 is less than 29471). Euler's totient φ(29471) = 27192 numbers up to 29471 share no factor with it.
- 4
The digits of 29471 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 103 steps to reach 1.
LaTeX source of the formulas on this page
\[ 29471 = 13 \times 2267 \]
29471 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 31752 |
| Euler totient φ(n) | 27192 |
| Square | 868539841 |
| Cube | 25596737654111 |
| Square root | 171.671197 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 103 |
| Scientific notation | 2.9471 × |
29471 in other forms
| Form | Value |
|---|---|
| In words | twenty-nine thousand four hundred and seventy-one |
| Binary (base 2) | 111001100011111 |
| Octal (base 8) | 71437 |
| Hexadecimal (base 16) | 731F |
| Base 3 | 1111102112 |
| As time | 29471 seconds = 8 h 11 min 11 s |
Is 29471 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 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 7) | 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 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 29471 a prime number?
No. 29471 = 13 × 2267, so it is divisible by 13.
What are the factors of 29471?
1, 13, 2267, 29471.
What is 29471 in binary?
111001100011111 (hexadecimal 731F, octal 71437).
What is the square root of 29471?
About 171.6712.
Is 29471 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 29471?
29471 is a semiprime: 13 × 2267, the product of two primes.