The number 26443
26443 is a composite number with 4 divisors. Its prime factorisation is 31 × 853. Divisors (4): 1, 31, 853, 26443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 26443: a semiprime: 31 × 853, the product of two primes.
- 2
26443 is composite. Its prime factorisation is
- 3
The divisors add up to 27328; without 26443 itself that is 885, so 26443 is deficient (885 is less than 26443). Euler's totient φ(26443) = 25560 numbers up to 26443 share no factor with it.
- 4
The digits of 26443 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 139 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26443 = 31 \times 853 \]
26443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27328 |
| Euler totient φ(n) | 25560 |
| Square | 699232249 |
| Cube | 18489798360307 |
| Square root | 162.613038 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 139 |
| Scientific notation | 2.6443 × |
26443 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand four hundred and forty-three |
| Binary (base 2) | 110011101001011 |
| Octal (base 8) | 63513 |
| Hexadecimal (base 16) | 674B |
| Base 3 | 1100021101 |
| As time | 26443 seconds = 7 h 20 min 43 s |
Is 26443 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 3) | 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 1) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 26443 a prime number?
No. 26443 = 31 × 853, so it is divisible by 31.
What are the factors of 26443?
1, 31, 853, 26443.
What is 26443 in binary?
110011101001011 (hexadecimal 674B, octal 63513).
What is the square root of 26443?
About 162.6130.
Is 26443 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 26443?
26443 is a semiprime: 31 × 853, the product of two primes.