The number 26986
26986 is a composite number with 8 divisors. Its prime factorisation is 2 × 103 × 131. Divisors (8): 1, 2, 103, 131, 206, 262, 13493, 26986.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
26986 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
26986 is composite. Its prime factorisation is
- 3
The divisors add up to 41184; without 26986 itself that is 14198, so 26986 is deficient (14198 is less than 26986). Euler's totient φ(26986) = 13260 numbers up to 26986 share no factor with it.
- 4
The digits of 26986 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 46 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26986 = 2 \times 103 \times 131 \]
26986 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 41184 |
| Euler totient φ(n) | 13260 |
| Square | 728244196 |
| Cube | 19652397873256 |
| Square root | 164.274161 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 46 |
| Scientific notation | 2.6986 × |
26986 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand nine hundred and eighty-six |
| Binary (base 2) | 110100101101010 |
| Octal (base 8) | 64552 |
| Hexadecimal (base 16) | 696A |
| Base 3 | 1101000111 |
| As time | 26986 seconds = 7 h 29 min 46 s |
Is 26986 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (26986 ÷ 2 = 13493) | 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 1) | 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 4) | 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 3) | 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 26986 a prime number?
No. 26986 = 2 × 103 × 131, so it is divisible by 2.
What are the factors of 26986?
1, 2, 103, 131, 206, 262, 13493, 26986.
What is 26986 in binary?
110100101101010 (hexadecimal 696A, octal 64552).
What is the square root of 26986?
About 164.2742.
Is 26986 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 26986?
It is a composite number with 8 divisors.