The number 26842
26842 is a composite number with 4 divisors. Its prime factorisation is 2 × 13421. Divisors (4): 1, 2, 13421, 26842.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 26842: a semiprime: 2 × 13421, the product of two primes.
- 2
26842 is composite. Its prime factorisation is
- 3
The divisors add up to 40266; without 26842 itself that is 13424, so 26842 is deficient (13424 is less than 26842). Euler's totient φ(26842) = 13420 numbers up to 26842 share no factor with it.
- 4
The digits of 26842 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 95 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26842 = 2 \times 13421 \]
26842 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 40266 |
| Euler totient φ(n) | 13420 |
| Square | 720492964 |
| Cube | 19339472139688 |
| Square root | 163.835283 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 95 |
| Scientific notation | 2.6842 × |
26842 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand eight hundred and forty-two |
| Binary (base 2) | 110100011011010 |
| Octal (base 8) | 64332 |
| Hexadecimal (base 16) | 68DA |
| Base 3 | 1100211011 |
| As time | 26842 seconds = 7 h 27 min 22 s |
Is 26842 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (26842 ÷ 2 = 13421) | 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 2) | 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 4) | 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 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | 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 26842 a prime number?
No. 26842 = 2 × 13421, so it is divisible by 2.
What are the factors of 26842?
1, 2, 13421, 26842.
What is 26842 in binary?
110100011011010 (hexadecimal 68DA, octal 64332).
What is the square root of 26842?
About 163.8353.
Is 26842 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 26842?
26842 is a semiprime: 2 × 13421, the product of two primes.