The number 77426
77426 is a composite number with 4 divisors. Its prime factorisation is 2 × 38713. Divisors (4): 1, 2, 38713, 77426.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 77426: a semiprime: 2 × 38713, the product of two primes.
- 2
77426 is composite. Its prime factorisation is
- 3
The divisors add up to 116142; without 77426 itself that is 38716, so 77426 is deficient (38716 is less than 77426). Euler's totient φ(77426) = 38712 numbers up to 77426 share no factor with it.
- 4
The digits of 77426 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 125 steps to reach 1.
LaTeX source of the formulas on this page
\[ 77426 = 2 \times 38713 \]
77426 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 116142 |
| Euler totient φ(n) | 38712 |
| Square | 5994785476 |
| Cube | 464152260264776 |
| Square root | 278.255278 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 125 |
| Scientific notation | 7.7426 × |
77426 in other forms
| Form | Value |
|---|---|
| In words | seventy-seven thousand four hundred and twenty-six |
| Binary (base 2) | 10010111001110010 |
| Octal (base 8) | 227162 |
| Hexadecimal (base 16) | 12E72 |
| Base 3 | 10221012122 |
| As time | 77426 seconds = 21 h 30 min 26 s |
Is 77426 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (77426 ÷ 2 = 38713) | 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 1) | 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 6) | 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 2) | 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 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 77426 a prime number?
No. 77426 = 2 × 38713, so it is divisible by 2.
What are the factors of 77426?
1, 2, 38713, 77426.
What is 77426 in binary?
10010111001110010 (hexadecimal 12E72, octal 227162).
What is the square root of 77426?
About 278.2553.
Is 77426 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 77426?
77426 is a semiprime: 2 × 38713, the product of two primes.