The number 2747
2747 is a composite number with 4 divisors. Its prime factorisation is 41 × 67. Divisors (4): 1, 41, 67, 2747.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 2747: a semiprime: 41 × 67, the product of two primes.
- 2
2747 is composite. Its prime factorisation is
- 3
The divisors add up to 2856; without 2747 itself that is 109, so 2747 is deficient (109 is less than 2747). Euler's totient φ(2747) = 2640 numbers up to 2747 share no factor with it.
- 4
The digits of 2747 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 66 steps to reach 1.
LaTeX source of the formulas on this page
\[ 2747 = 41 \times 67 \]
2747 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 2856 |
| Euler totient φ(n) | 2640 |
| Square | 7546009 |
| Cube | 20728886723 |
| Square root | 52.411831 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 66 |
| Scientific notation | 2.747 × |
2747 in other forms
| Form | Value |
|---|---|
| In words | two thousand seven hundred and forty-seven |
| Roman numerals | MMDCCXLVII |
| Binary (base 2) | 101010111011 |
| Octal (base 8) | 5273 |
| Hexadecimal (base 16) | ABB |
| Base 3 | 10202202 |
| As time | 2747 seconds = 45 min 47 s |
Is 2747 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 2) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 2747 a prime number?
No. 2747 = 41 × 67, so it is divisible by 41.
What are the factors of 2747?
1, 41, 67, 2747.
What is 2747 in binary?
101010111011 (hexadecimal ABB, octal 5273).
What is the square root of 2747?
About 52.4118.
What is 2747 in Roman numerals?
MMDCCXLVII.
Is 2747 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 2747?
2747 is a semiprime: 41 × 67, the product of two primes.