The number 76429
76429 is a composite number with 4 divisors. Its prime factorisation is 23 × 3323. Divisors (4): 1, 23, 3323, 76429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 76429: a semiprime: 23 × 3323, the product of two primes.
- 2
76429 is composite. Its prime factorisation is
- 3
The divisors add up to 79776; without 76429 itself that is 3347, so 76429 is deficient (3347 is less than 76429). Euler's totient φ(76429) = 73084 numbers up to 76429 share no factor with it.
- 4
The digits of 76429 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 107 steps to reach 1.
LaTeX source of the formulas on this page
\[ 76429 = 23 \times 3323 \]
76429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 79776 |
| Euler totient φ(n) | 73084 |
| Square | 5841392041 |
| Cube | 446451752301589 |
| Square root | 276.457953 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 107 |
| Scientific notation | 7.6429 × |
76429 in other forms
| Form | Value |
|---|---|
| In words | seventy-six thousand four hundred and twenty-nine |
| Binary (base 2) | 10010101010001101 |
| Octal (base 8) | 225215 |
| Hexadecimal (base 16) | 12A8D |
| Base 3 | 10212211201 |
| As time | 76429 seconds = 21 h 13 min 49 s |
Is 76429 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 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 76429 a prime number?
No. 76429 = 23 × 3323, so it is divisible by 23.
What are the factors of 76429?
1, 23, 3323, 76429.
What is 76429 in binary?
10010101010001101 (hexadecimal 12A8D, octal 225215).
What is the square root of 76429?
About 276.4580.
Is 76429 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 76429?
76429 is a semiprime: 23 × 3323, the product of two primes.