The number 38101
38101 is a composite number with 4 divisors. Its prime factorisation is 7 × 5443. Divisors (4): 1, 7, 5443, 38101.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38101: a semiprime: 7 × 5443, the product of two primes.
- 2
38101 is composite. Its prime factorisation is
- 3
The divisors add up to 43552; without 38101 itself that is 5451, so 38101 is deficient (5451 is less than 38101). Euler's totient φ(38101) = 32652 numbers up to 38101 share no factor with it.
- 4
The digits of 38101 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 80 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38101 = 7 \times 5443 \]
38101 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43552 |
| Euler totient φ(n) | 32652 |
| Square | 1451686201 |
| Cube | 55310695944301 |
| Square root | 195.194775 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 80 |
| Scientific notation | 3.8101 × |
38101 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand one hundred and one |
| Binary (base 2) | 1001010011010101 |
| Octal (base 8) | 112325 |
| Hexadecimal (base 16) | 94D5 |
| Base 3 | 1221021011 |
| As time | 38101 seconds = 10 h 35 min 1 s |
Is 38101 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 | Yes (38101 ÷ 7 = 5443) | 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 8) | 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 38101 a prime number?
No. 38101 = 7 × 5443, so it is divisible by 7.
What are the factors of 38101?
1, 7, 5443, 38101.
What is 38101 in binary?
1001010011010101 (hexadecimal 94D5, octal 112325).
What is the square root of 38101?
About 195.1948.
Is 38101 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 38101?
38101 is a semiprime: 7 × 5443, the product of two primes.