The number 38418
38418 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 19 × 337. Divisors (16): 1, 2, 3, 6, 19, 38, 57, 114, 337, 674, 1011, 2022, 6403, 12806, 19209, 38418.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
38418 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
38418 is composite. Its prime factorisation is
- 3
The divisors add up to 81120; without 38418 itself that is 42702, so 38418 is abundant (42702 is more than 38418). Euler's totient φ(38418) = 12096 numbers up to 38418 share no factor with it.
- 4
The digits of 38418 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 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38418 = 2 \times 3 \times 19 \times 337 \]
38418 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 81120 |
| Euler totient φ(n) | 12096 |
| Square | 1475942724 |
| Cube | 56702767570632 |
| Square root | 196.005102 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 75 |
| Scientific notation | 3.8418 × |
38418 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand four hundred and eighteen |
| Binary (base 2) | 1001011000010010 |
| Octal (base 8) | 113022 |
| Hexadecimal (base 16) | 9612 |
| Base 3 | 1221200220 |
| As time | 38418 seconds = 10 h 40 min 18 s |
Is 38418 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (38418 ÷ 2 = 19209) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (38418 ÷ 3 = 12806) | 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 (38418 ÷ 6 = 6403) | 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 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 6) | 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 38418 a prime number?
No. 38418 = 2 × 3 × 19 × 337, so it is divisible by 2.
What are the factors of 38418?
1, 2, 3, 6, 19, 38, 57, 114, 337, 674, 1011, 2022, 6403, 12806, 19209, 38418.
What is 38418 in binary?
1001011000010010 (hexadecimal 9612, octal 113022).
What is the square root of 38418?
About 196.0051.
Is 38418 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 38418?
It is a composite number with 16 divisors.