The number 80426
80426 is a composite number with 4 divisors. Its prime factorisation is 2 × 40213. Divisors (4): 1, 2, 40213, 80426.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80426: a semiprime: 2 × 40213, the product of two primes.
- 2
80426 is composite. Its prime factorisation is
- 3
The divisors add up to 120642; without 80426 itself that is 40216, so 80426 is deficient (40216 is less than 80426). Euler's totient φ(80426) = 40212 numbers up to 80426 share no factor with it.
- 4
The digits of 80426 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80426 = 2 \times 40213 \]
80426 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 120642 |
| Euler totient φ(n) | 40212 |
| Square | 6468341476 |
| Cube | 520222831548776 |
| Square root | 283.594781 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 138 |
| Scientific notation | 8.0426 × |
80426 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand four hundred and twenty-six |
| Binary (base 2) | 10011101000101010 |
| Octal (base 8) | 235052 |
| Hexadecimal (base 16) | 13A2A |
| Base 3 | 11002022202 |
| As time | 80426 seconds = 22 h 20 min 26 s |
Is 80426 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80426 ÷ 2 = 40213) | 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 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 5) | 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 80426 a prime number?
No. 80426 = 2 × 40213, so it is divisible by 2.
What are the factors of 80426?
1, 2, 40213, 80426.
What is 80426 in binary?
10011101000101010 (hexadecimal 13A2A, octal 235052).
What is the square root of 80426?
About 283.5948.
Is 80426 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 80426?
80426 is a semiprime: 2 × 40213, the product of two primes.