The number 67390
67390 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 23 × 293. Divisors (16): 1, 2, 5, 10, 23, 46, 115, 230, 293, 586, 1465, 2930, 6739, 13478, 33695, 67390.
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How to work it out
- 1
67390 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
67390 is composite. Its prime factorisation is
- 3
The divisors add up to 127008; without 67390 itself that is 59618, so 67390 is deficient (59618 is less than 67390). Euler's totient φ(67390) = 25696 numbers up to 67390 share no factor with it.
- 4
The digits of 67390 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 161 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67390 = 2 \times 5 \times 23 \times 293 \]
67390 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 127008 |
| Euler totient φ(n) | 25696 |
| Square | 4541412100 |
| Cube | 306045761419000 |
| Square root | 259.595840 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 161 |
| Scientific notation | 6.739 × |
67390 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand three hundred and ninety |
| Binary (base 2) | 10000011100111110 |
| Octal (base 8) | 203476 |
| Hexadecimal (base 16) | 1073E |
| Base 3 | 10102102221 |
| As time | 67390 seconds = 18 h 43 min 10 s |
Is 67390 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67390 ÷ 2 = 33695) | 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 | Yes (67390 ÷ 5 = 13478) | 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 6) | 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 | Yes (67390 ÷ 10 = 6739) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67390 a prime number?
No. 67390 = 2 × 5 × 23 × 293, so it is divisible by 2.
What are the factors of 67390?
1, 2, 5, 10, 23, 46, 115, 230, 293, 586, 1465, 2930, 6739, 13478, 33695, 67390.
What is 67390 in binary?
10000011100111110 (hexadecimal 1073E, octal 203476).
What is the square root of 67390?
About 259.5958.
Is 67390 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 67390?
It is a composite number with 16 divisors.