The number 38081
38081 is a composite number with 4 divisors. Its prime factorisation is 113 × 337. Divisors (4): 1, 113, 337, 38081.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38081: a semiprime: 113 × 337, the product of two primes.
- 2
38081 is composite. Its prime factorisation is
- 3
The divisors add up to 38532; without 38081 itself that is 451, so 38081 is deficient (451 is less than 38081). Euler's totient φ(38081) = 37632 numbers up to 38081 share no factor with it.
- 4
The digits of 38081 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 106 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38081 = 113 \times 337 \]
38081 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 38532 |
| Euler totient φ(n) | 37632 |
| Square | 1450162561 |
| Cube | 55223640485441 |
| Square root | 195.143537 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 106 |
| Scientific notation | 3.8081 × |
38081 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand and eighty-one |
| Binary (base 2) | 1001010011000001 |
| Octal (base 8) | 112301 |
| Hexadecimal (base 16) | 94C1 |
| Base 3 | 1221020102 |
| As time | 38081 seconds = 10 h 34 min 41 s |
Is 38081 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38081 a prime number?
No. 38081 = 113 × 337, so it is divisible by 113.
What are the factors of 38081?
1, 113, 337, 38081.
What is 38081 in binary?
1001010011000001 (hexadecimal 94C1, octal 112301).
What is the square root of 38081?
About 195.1435.
Is 38081 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 38081?
38081 is a semiprime: 113 × 337, the product of two primes.