The number 49218
49218 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 13 × 631. Divisors (16): 1, 2, 3, 6, 13, 26, 39, 78, 631, 1262, 1893, 3786, 8203, 16406, 24609, 49218.
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How to work it out
- 1
49218 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49218 is composite. Its prime factorisation is
- 3
The divisors add up to 106176; without 49218 itself that is 56958, so 49218 is abundant (56958 is more than 49218). Euler's totient φ(49218) = 15120 numbers up to 49218 share no factor with it.
- 4
The digits of 49218 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 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49218 = 2 \times 3 \times 13 \times 631 \]
49218 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 106176 |
| Euler totient φ(n) | 15120 |
| Square | 2422411524 |
| Cube | 119226250388232 |
| Square root | 221.851302 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.9218 × |
49218 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand two hundred and eighteen |
| Binary (base 2) | 1100000001000010 |
| Octal (base 8) | 140102 |
| Hexadecimal (base 16) | C042 |
| Base 3 | 2111111220 |
| As time | 49218 seconds = 13 h 40 min 18 s |
Is 49218 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49218 ÷ 2 = 24609) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (49218 ÷ 3 = 16406) | 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 | Yes (49218 ÷ 6 = 8203) | 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 2) | 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 8) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49218 a prime number?
No. 49218 = 2 × 3 × 13 × 631, so it is divisible by 2.
What are the factors of 49218?
1, 2, 3, 6, 13, 26, 39, 78, 631, 1262, 1893, 3786, 8203, 16406, 24609, 49218.
What is 49218 in binary?
1100000001000010 (hexadecimal C042, octal 140102).
What is the square root of 49218?
About 221.8513.
Is 49218 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 49218?
It is a composite number with 16 divisors.