The number 37381
37381 is a composite number with 4 divisors. Its prime factorisation is 29 × 1289. Divisors (4): 1, 29, 1289, 37381.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 37381: a semiprime: 29 × 1289, the product of two primes.
- 2
37381 is composite. Its prime factorisation is
- 3
The divisors add up to 38700; without 37381 itself that is 1319, so 37381 is deficient (1319 is less than 37381). Euler's totient φ(37381) = 36064 numbers up to 37381 share no factor with it.
- 4
The digits of 37381 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 186 steps to reach 1.
LaTeX source of the formulas on this page
\[ 37381 = 29 \times 1289 \]
37381 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 38700 |
| Euler totient φ(n) | 36064 |
| Square | 1397339161 |
| Cube | 52233935177341 |
| Square root | 193.341666 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 186 |
| Scientific notation | 3.7381 × |
37381 in other forms
| Form | Value |
|---|---|
| In words | thirty-seven thousand three hundred and eighty-one |
| Binary (base 2) | 1001001000000101 |
| Octal (base 8) | 111005 |
| Hexadecimal (base 16) | 9205 |
| Base 3 | 1220021111 |
| As time | 37381 seconds = 10 h 23 min 1 s |
Is 37381 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 1) | 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 1) | 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 5) | 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 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 37381 a prime number?
No. 37381 = 29 × 1289, so it is divisible by 29.
What are the factors of 37381?
1, 29, 1289, 37381.
What is 37381 in binary?
1001001000000101 (hexadecimal 9205, octal 111005).
What is the square root of 37381?
About 193.3417.
Is 37381 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 37381?
37381 is a semiprime: 29 × 1289, the product of two primes.