The number 26749
26749 is a composite number with 4 divisors. Its prime factorisation is 23 × 1163. Divisors (4): 1, 23, 1163, 26749.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 26749: a semiprime: 23 × 1163, the product of two primes.
- 2
26749 is composite. Its prime factorisation is
- 3
The divisors add up to 27936; without 26749 itself that is 1187, so 26749 is deficient (1187 is less than 26749). Euler's totient φ(26749) = 25564 numbers up to 26749 share no factor with it.
- 4
The digits of 26749 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 51 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26749 = 23 \times 1163 \]
26749 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27936 |
| Euler totient φ(n) | 25564 |
| Square | 715509001 |
| Cube | 19139150267749 |
| Square root | 163.551215 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 51 |
| Scientific notation | 2.6749 × |
26749 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand seven hundred and forty-nine |
| Binary (base 2) | 110100001111101 |
| Octal (base 8) | 64175 |
| Hexadecimal (base 16) | 687D |
| Base 3 | 1100200201 |
| As time | 26749 seconds = 7 h 25 min 49 s |
Is 26749 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 2) | 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 5) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 26749 a prime number?
No. 26749 = 23 × 1163, so it is divisible by 23.
What are the factors of 26749?
1, 23, 1163, 26749.
What is 26749 in binary?
110100001111101 (hexadecimal 687D, octal 64175).
What is the square root of 26749?
About 163.5512.
Is 26749 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 26749?
26749 is a semiprime: 23 × 1163, the product of two primes.