The number 26018
26018 is a composite number with 4 divisors. Its prime factorisation is 2 × 13009. Divisors (4): 1, 2, 13009, 26018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 26018: a semiprime: 2 × 13009, the product of two primes.
- 2
26018 is composite. Its prime factorisation is
- 3
The divisors add up to 39030; without 26018 itself that is 13012, so 26018 is deficient (13012 is less than 26018). Euler's totient φ(26018) = 13008 numbers up to 26018 share no factor with it.
- 4
The digits of 26018 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 139 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26018 = 2 \times 13009 \]
26018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 39030 |
| Euler totient φ(n) | 13008 |
| Square | 676936324 |
| Cube | 17612529277832 |
| Square root | 161.300961 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 139 |
| Scientific notation | 2.6018 × |
26018 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand and eighteen |
| Binary (base 2) | 110010110100010 |
| Octal (base 8) | 62642 |
| Hexadecimal (base 16) | 65A2 |
| Base 3 | 1022200122 |
| As time | 26018 seconds = 7 h 13 min 38 s |
Is 26018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (26018 ÷ 2 = 13009) | 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 3) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 26018 a prime number?
No. 26018 = 2 × 13009, so it is divisible by 2.
What are the factors of 26018?
1, 2, 13009, 26018.
What is 26018 in binary?
110010110100010 (hexadecimal 65A2, octal 62642).
What is the square root of 26018?
About 161.3010.
Is 26018 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 26018?
26018 is a semiprime: 2 × 13009, the product of two primes.