The number 47049
47049 is a composite number with 4 divisors. Its prime factorisation is 3 × 15683. Divisors (4): 1, 3, 15683, 47049.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47049: a semiprime: 3 × 15683, the product of two primes.
- 2
47049 is composite. Its prime factorisation is
- 3
The divisors add up to 62736; without 47049 itself that is 15687, so 47049 is deficient (15687 is less than 47049). Euler's totient φ(47049) = 31364 numbers up to 47049 share no factor with it.
- 4
The digits of 47049 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47049 = 3 \times 15683 \]
47049 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 62736 |
| Euler totient φ(n) | 31364 |
| Square | 2213608401 |
| Cube | 104148061658649 |
| Square root | 216.907815 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.7049 × |
47049 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand and forty-nine |
| Binary (base 2) | 1011011111001001 |
| Octal (base 8) | 133711 |
| Hexadecimal (base 16) | B7C9 |
| Base 3 | 2101112120 |
| As time | 47049 seconds = 13 h 4 min 9 s |
Is 47049 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 | Yes (47049 ÷ 3 = 15683) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 6) | 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 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47049 a prime number?
No. 47049 = 3 × 15683, so it is divisible by 3.
What are the factors of 47049?
1, 3, 15683, 47049.
What is 47049 in binary?
1011011111001001 (hexadecimal B7C9, octal 133711).
What is the square root of 47049?
About 216.9078.
Is 47049 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 47049?
47049 is a semiprime: 3 × 15683, the product of two primes.