The number 26490
26490 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 5 × 883. Divisors (16): 1, 2, 3, 5, 6, 10, 15, 30, 883, 1766, 2649, 4415, 5298, 8830, 13245, 26490.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
26490 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
26490 is composite. Its prime factorisation is
- 3
The divisors add up to 63648; without 26490 itself that is 37158, so 26490 is abundant (37158 is more than 26490). Euler's totient φ(26490) = 7056 numbers up to 26490 share no factor with it.
- 4
The digits of 26490 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 170 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26490 = 2 \times 3 \times 5 \times 883 \]
26490 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 63648 |
| Euler totient φ(n) | 7056 |
| Square | 701720100 |
| Cube | 18588565449000 |
| Square root | 162.757488 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 170 |
| Scientific notation | 2.649 × |
26490 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand four hundred and ninety |
| Binary (base 2) | 110011101111010 |
| Octal (base 8) | 63572 |
| Hexadecimal (base 16) | 677A |
| Base 3 | 1100100010 |
| As time | 26490 seconds = 7 h 21 min 30 s |
Is 26490 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (26490 ÷ 2 = 13245) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (26490 ÷ 3 = 8830) | 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 | Yes (26490 ÷ 5 = 5298) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (26490 ÷ 6 = 4415) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (26490 ÷ 10 = 2649) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 26490 a prime number?
No. 26490 = 2 × 3 × 5 × 883, so it is divisible by 2.
What are the factors of 26490?
1, 2, 3, 5, 6, 10, 15, 30, 883, 1766, 2649, 4415, 5298, 8830, 13245, 26490.
What is 26490 in binary?
110011101111010 (hexadecimal 677A, octal 63572).
What is the square root of 26490?
About 162.7575.
Is 26490 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 26490?
It is a composite number with 16 divisors.