The number 49018
49018 is a composite number with 4 divisors. Its prime factorisation is 2 × 24509. Divisors (4): 1, 2, 24509, 49018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49018: a semiprime: 2 × 24509, the product of two primes.
- 2
49018 is composite. Its prime factorisation is
- 3
The divisors add up to 73530; without 49018 itself that is 24512, so 49018 is deficient (24512 is less than 49018). Euler's totient φ(49018) = 24508 numbers up to 49018 share no factor with it.
- 4
The digits of 49018 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 65 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49018 = 2 \times 24509 \]
49018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73530 |
| Euler totient φ(n) | 24508 |
| Square | 2402764324 |
| Cube | 117778701633832 |
| Square root | 221.400090 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 65 |
| Scientific notation | 4.9018 × |
49018 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand and eighteen |
| Binary (base 2) | 1011111101111010 |
| Octal (base 8) | 137572 |
| Hexadecimal (base 16) | BF7A |
| Base 3 | 2111020111 |
| As time | 49018 seconds = 13 h 36 min 58 s |
Is 49018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49018 ÷ 2 = 24509) | 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 4) | 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 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 | No (remainder 2) | 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 49018 a prime number?
No. 49018 = 2 × 24509, so it is divisible by 2.
What are the factors of 49018?
1, 2, 24509, 49018.
What is 49018 in binary?
1011111101111010 (hexadecimal BF7A, octal 137572).
What is the square root of 49018?
About 221.4001.
Is 49018 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 49018?
49018 is a semiprime: 2 × 24509, the product of two primes.