The number 38243
38243 is a composite number with 4 divisors. Its prime factorisation is 167 × 229. Divisors (4): 1, 167, 229, 38243.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38243: a semiprime: 167 × 229, the product of two primes.
- 2
38243 is composite. Its prime factorisation is
- 3
The divisors add up to 38640; without 38243 itself that is 397, so 38243 is deficient (397 is less than 38243). Euler's totient φ(38243) = 37848 numbers up to 38243 share no factor with it.
- 4
The digits of 38243 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 80 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38243 = 167 \times 229 \]
38243 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 38640 |
| Euler totient φ(n) | 37848 |
| Square | 1462527049 |
| Cube | 55931421934907 |
| Square root | 195.558175 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 80 |
| Scientific notation | 3.8243 × |
38243 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand two hundred and forty-three |
| Binary (base 2) | 1001010101100011 |
| Octal (base 8) | 112543 |
| Hexadecimal (base 16) | 9563 |
| Base 3 | 1221110102 |
| As time | 38243 seconds = 10 h 37 min 23 s |
Is 38243 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 3) | 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 | No (remainder 5) | 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 3) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38243 a prime number?
No. 38243 = 167 × 229, so it is divisible by 167.
What are the factors of 38243?
1, 167, 229, 38243.
What is 38243 in binary?
1001010101100011 (hexadecimal 9563, octal 112543).
What is the square root of 38243?
About 195.5582.
Is 38243 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 38243?
38243 is a semiprime: 167 × 229, the product of two primes.