The number 80026
80026 is a composite number with 4 divisors. Its prime factorisation is 2 × 40013. Divisors (4): 1, 2, 40013, 80026.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80026: a semiprime: 2 × 40013, the product of two primes.
- 2
80026 is composite. Its prime factorisation is
- 3
The divisors add up to 120042; without 80026 itself that is 40016, so 80026 is deficient (40016 is less than 80026). Euler's totient φ(80026) = 40012 numbers up to 80026 share no factor with it.
- 4
The digits of 80026 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80026 = 2 \times 40013 \]
80026 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 120042 |
| Euler totient φ(n) | 40012 |
| Square | 6404160676 |
| Cube | 512499362257576 |
| Square root | 282.888671 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 68 |
| Scientific notation | 8.0026 × |
80026 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand and twenty-six |
| Binary (base 2) | 10011100010011010 |
| Octal (base 8) | 234232 |
| Hexadecimal (base 16) | 1389A |
| Base 3 | 11001202221 |
| As time | 80026 seconds = 22 h 13 min 46 s |
Is 80026 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80026 ÷ 2 = 40013) | 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 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 7) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80026 a prime number?
No. 80026 = 2 × 40013, so it is divisible by 2.
What are the factors of 80026?
1, 2, 40013, 80026.
What is 80026 in binary?
10011100010011010 (hexadecimal 1389A, octal 234232).
What is the square root of 80026?
About 282.8887.
Is 80026 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 80026?
80026 is a semiprime: 2 × 40013, the product of two primes.