The number 76427
76427 is a composite number with 4 divisors. Its prime factorisation is 13 × 5879. Divisors (4): 1, 13, 5879, 76427.
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How to work it out
- 1
What is special about 76427: a semiprime: 13 × 5879, the product of two primes.
- 2
76427 is composite. Its prime factorisation is
- 3
The divisors add up to 82320; without 76427 itself that is 5893, so 76427 is deficient (5893 is less than 76427). Euler's totient φ(76427) = 70536 numbers up to 76427 share no factor with it.
- 4
The digits of 76427 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 107 steps to reach 1.
LaTeX source of the formulas on this page
\[ 76427 = 13 \times 5879 \]
76427 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 82320 |
| Euler totient φ(n) | 70536 |
| Square | 5841086329 |
| Cube | 446416704866483 |
| Square root | 276.454336 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 107 |
| Scientific notation | 7.6427 × |
76427 in other forms
| Form | Value |
|---|---|
| In words | seventy-six thousand four hundred and twenty-seven |
| Binary (base 2) | 10010101010001011 |
| Octal (base 8) | 225213 |
| Hexadecimal (base 16) | 12A8B |
| Base 3 | 10212211122 |
| As time | 76427 seconds = 21 h 13 min 47 s |
Is 76427 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 2) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 76427 a prime number?
No. 76427 = 13 × 5879, so it is divisible by 13.
What are the factors of 76427?
1, 13, 5879, 76427.
What is 76427 in binary?
10010101010001011 (hexadecimal 12A8B, octal 225213).
What is the square root of 76427?
About 276.4543.
Is 76427 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 76427?
76427 is a semiprime: 13 × 5879, the product of two primes.