The number 67138
67138 is a composite number with 4 divisors. Its prime factorisation is 2 × 33569. Divisors (4): 1, 2, 33569, 67138.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67138: a semiprime: 2 × 33569, the product of two primes.
- 2
67138 is composite. Its prime factorisation is
- 3
The divisors add up to 100710; without 67138 itself that is 33572, so 67138 is deficient (33572 is less than 67138). Euler's totient φ(67138) = 33568 numbers up to 67138 share no factor with it.
- 4
The digits of 67138 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 112 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67138 = 2 \times 33569 \]
67138 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 100710 |
| Euler totient φ(n) | 33568 |
| Square | 4507511044 |
| Cube | 302625276472072 |
| Square root | 259.110015 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 112 |
| Scientific notation | 6.7138 × |
67138 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand one hundred and thirty-eight |
| Binary (base 2) | 10000011001000010 |
| Octal (base 8) | 203102 |
| Hexadecimal (base 16) | 10642 |
| Base 3 | 10102002121 |
| As time | 67138 seconds = 18 h 38 min 58 s |
Is 67138 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67138 ÷ 2 = 33569) | 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 2) | 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 4) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67138 a prime number?
No. 67138 = 2 × 33569, so it is divisible by 2.
What are the factors of 67138?
1, 2, 33569, 67138.
What is 67138 in binary?
10000011001000010 (hexadecimal 10642, octal 203102).
What is the square root of 67138?
About 259.1100.
Is 67138 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 67138?
67138 is a semiprime: 2 × 33569, the product of two primes.