The number 67478
67478 is a composite number with 4 divisors. Its prime factorisation is 2 × 33739. Divisors (4): 1, 2, 33739, 67478.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67478: a semiprime: 2 × 33739, the product of two primes.
- 2
67478 is composite. Its prime factorisation is
- 3
The divisors add up to 101220; without 67478 itself that is 33742, so 67478 is deficient (33742 is less than 67478). Euler's totient φ(67478) = 33738 numbers up to 67478 share no factor with it.
- 4
The digits of 67478 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 161 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67478 = 2 \times 33739 \]
67478 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 101220 |
| Euler totient φ(n) | 33738 |
| Square | 4553280484 |
| Cube | 307246260499352 |
| Square root | 259.765279 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 161 |
| Scientific notation | 6.7478 × |
67478 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand four hundred and seventy-eight |
| Binary (base 2) | 10000011110010110 |
| Octal (base 8) | 203626 |
| Hexadecimal (base 16) | 10796 |
| Base 3 | 10102120012 |
| As time | 67478 seconds = 18 h 44 min 38 s |
Is 67478 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67478 ÷ 2 = 33739) | 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 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 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67478 a prime number?
No. 67478 = 2 × 33739, so it is divisible by 2.
What are the factors of 67478?
1, 2, 33739, 67478.
What is 67478 in binary?
10000011110010110 (hexadecimal 10796, octal 203626).
What is the square root of 67478?
About 259.7653.
Is 67478 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 67478?
67478 is a semiprime: 2 × 33739, the product of two primes.