The number 47029
47029 is a composite number with 4 divisors. Its prime factorisation is 131 × 359. Divisors (4): 1, 131, 359, 47029.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47029: a semiprime: 131 × 359, the product of two primes.
- 2
47029 is composite. Its prime factorisation is
- 3
The divisors add up to 47520; without 47029 itself that is 491, so 47029 is deficient (491 is less than 47029). Euler's totient φ(47029) = 46540 numbers up to 47029 share no factor with it.
- 4
The digits of 47029 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47029 = 131 \times 359 \]
47029 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47520 |
| Euler totient φ(n) | 46540 |
| Square | 2211726841 |
| Cube | 104015301605389 |
| Square root | 216.861707 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.7029 × |
47029 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand and twenty-nine |
| Binary (base 2) | 1011011110110101 |
| Octal (base 8) | 133665 |
| Hexadecimal (base 16) | B7B5 |
| Base 3 | 2101111211 |
| As time | 47029 seconds = 13 h 3 min 49 s |
Is 47029 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 3) | 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 4) | 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 4) | 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 47029 a prime number?
No. 47029 = 131 × 359, so it is divisible by 131.
What are the factors of 47029?
1, 131, 359, 47029.
What is 47029 in binary?
1011011110110101 (hexadecimal B7B5, octal 133665).
What is the square root of 47029?
About 216.8617.
Is 47029 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 47029?
47029 is a semiprime: 131 × 359, the product of two primes.