The number 49918
49918 is a composite number with 8 divisors. Its prime factorisation is 2 × 11 × 2269. Divisors (8): 1, 2, 11, 22, 2269, 4538, 24959, 49918.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49918 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49918 is composite. Its prime factorisation is
- 3
The divisors add up to 81720; without 49918 itself that is 31802, so 49918 is deficient (31802 is less than 49918). Euler's totient φ(49918) = 22680 numbers up to 49918 share no factor with it.
- 4
The digits of 49918 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 88 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49918 = 2 \times 11 \times 2269 \]
49918 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 81720 |
| Euler totient φ(n) | 22680 |
| Square | 2491806724 |
| Cube | 124386008048632 |
| Square root | 223.423365 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 88 |
| Scientific notation | 4.9918 × |
49918 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand nine hundred and eighteen |
| Binary (base 2) | 1100001011111110 |
| Octal (base 8) | 141376 |
| Hexadecimal (base 16) | C2FE |
| Base 3 | 2112110211 |
| As time | 49918 seconds = 13 h 51 min 58 s |
Is 49918 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49918 ÷ 2 = 24959) | 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 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 | No (remainder 4) | 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 6) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (49918 ÷ 11 = 4538) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49918 a prime number?
No. 49918 = 2 × 11 × 2269, so it is divisible by 2.
What are the factors of 49918?
1, 2, 11, 22, 2269, 4538, 24959, 49918.
What is 49918 in binary?
1100001011111110 (hexadecimal C2FE, octal 141376).
What is the square root of 49918?
About 223.4234.
Is 49918 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 49918?
It is a composite number with 8 divisors.