The number 38812
38812 is a composite number with 12 divisors. Its prime factorisation is × 31 × 313. Divisors (12): 1, 2, 4, 31, 62, 124, 313, 626, 1252, 9703, 19406, 38812.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
38812 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
38812 is composite. Its prime factorisation is
- 3
The divisors add up to 70336; without 38812 itself that is 31524, so 38812 is deficient (31524 is less than 38812). Euler's totient φ(38812) = 18720 numbers up to 38812 share no factor with it.
- 4
The digits of 38812 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 137 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38812 = 2^{2} \times 31 \times 313 \]38812 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 70336 |
| Euler totient φ(n) | 18720 |
| Square | 1506371344 |
| Cube | 58465284603328 |
| Square root | 197.007614 (= 2√9703) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 137 |
| Scientific notation | 3.8812 × |
38812 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand eight hundred and twelve |
| Binary (base 2) | 1001011110011100 |
| Octal (base 8) | 113634 |
| Hexadecimal (base 16) | 979C |
| Base 3 | 1222020111 |
| As time | 38812 seconds = 10 h 46 min 52 s |
Is 38812 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (38812 ÷ 2 = 19406) | 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 | Yes (38812 ÷ 4 = 9703) | 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 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 4) | 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 2) | 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 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38812 a prime number?
No. 38812 = × 31 × 313, so it is divisible by 2.
What are the factors of 38812?
1, 2, 4, 31, 62, 124, 313, 626, 1252, 9703, 19406, 38812.
What is 38812 in binary?
1001011110011100 (hexadecimal 979C, octal 113634).
What is the square root of 38812?
About 197.0076, exactly 2√9703.
Is 38812 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 38812?
It is a composite number with 12 divisors.