The number 76009
76009 is a composite number with 4 divisors. Its prime factorisation is 29 × 2621. Divisors (4): 1, 29, 2621, 76009.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 76009: a semiprime: 29 × 2621, the product of two primes.
- 2
76009 is composite. Its prime factorisation is
- 3
The divisors add up to 78660; without 76009 itself that is 2651, so 76009 is deficient (2651 is less than 76009). Euler's totient φ(76009) = 73360 numbers up to 76009 share no factor with it.
- 4
The digits of 76009 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 187 steps to reach 1.
LaTeX source of the formulas on this page
\[ 76009 = 29 \times 2621 \]
76009 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 78660 |
| Euler totient φ(n) | 73360 |
| Square | 5777368081 |
| Cube | 439131970468729 |
| Square root | 275.697298 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 187 |
| Scientific notation | 7.6009 × |
76009 in other forms
| Form | Value |
|---|---|
| In words | seventy-six thousand and nine |
| Binary (base 2) | 10010100011101001 |
| Octal (base 8) | 224351 |
| Hexadecimal (base 16) | 128E9 |
| Base 3 | 10212021011 |
| As time | 76009 seconds = 21 h 6 min 49 s |
Is 76009 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | 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 10) | 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 76009 a prime number?
No. 76009 = 29 × 2621, so it is divisible by 29.
What are the factors of 76009?
1, 29, 2621, 76009.
What is 76009 in binary?
10010100011101001 (hexadecimal 128E9, octal 224351).
What is the square root of 76009?
About 275.6973.
Is 76009 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 76009?
76009 is a semiprime: 29 × 2621, the product of two primes.