The number 26428
26428 is a composite number with 6 divisors. Its prime factorisation is × 6607. Divisors (6): 1, 2, 4, 6607, 13214, 26428.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
26428 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
26428 is composite. Its prime factorisation is
- 3
The divisors add up to 46256; without 26428 itself that is 19828, so 26428 is deficient (19828 is less than 26428). Euler's totient φ(26428) = 13212 numbers up to 26428 share no factor with it.
- 4
The digits of 26428 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 77 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26428 = 2^{2} \times 6607 \]26428 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 46256 |
| Euler totient φ(n) | 13212 |
| Square | 698439184 |
| Cube | 18458350754752 |
| Square root | 162.566909 (= 2√6607) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 77 |
| Scientific notation | 2.6428 × |
26428 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand four hundred and twenty-eight |
| Binary (base 2) | 110011100111100 |
| Octal (base 8) | 63474 |
| Hexadecimal (base 16) | 673C |
| Base 3 | 1100020211 |
| As time | 26428 seconds = 7 h 20 min 28 s |
Is 26428 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (26428 ÷ 2 = 13214) | 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 | Yes (26428 ÷ 4 = 6607) | 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 4) | 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 4) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 26428 a prime number?
No. 26428 = × 6607, so it is divisible by 2.
What are the factors of 26428?
1, 2, 4, 6607, 13214, 26428.
What is 26428 in binary?
110011100111100 (hexadecimal 673C, octal 63474).
What is the square root of 26428?
About 162.5669, exactly 2√6607.
Is 26428 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 26428?
It is a composite number with 6 divisors.