The number 40726
40726 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 2909. Divisors (8): 1, 2, 7, 14, 2909, 5818, 20363, 40726.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
40726 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
40726 is composite. Its prime factorisation is
- 3
The divisors add up to 69840; without 40726 itself that is 29114, so 40726 is deficient (29114 is less than 40726). Euler's totient φ(40726) = 17448 numbers up to 40726 share no factor with it.
- 4
The digits of 40726 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 88 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40726 = 2 \times 7 \times 2909 \]
40726 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 69840 |
| Euler totient φ(n) | 17448 |
| Square | 1658607076 |
| Cube | 67548431777176 |
| Square root | 201.806838 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 88 |
| Scientific notation | 4.0726 × |
40726 in other forms
| Form | Value |
|---|---|
| In words | forty thousand seven hundred and twenty-six |
| Binary (base 2) | 1001111100010110 |
| Octal (base 8) | 117426 |
| Hexadecimal (base 16) | 9F16 |
| Base 3 | 2001212101 |
| As time | 40726 seconds = 11 h 18 min 46 s |
Is 40726 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (40726 ÷ 2 = 20363) | 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 1) | 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 | Yes (40726 ÷ 7 = 5818) | 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 6) | 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 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 40726 a prime number?
No. 40726 = 2 × 7 × 2909, so it is divisible by 2.
What are the factors of 40726?
1, 2, 7, 14, 2909, 5818, 20363, 40726.
What is 40726 in binary?
1001111100010110 (hexadecimal 9F16, octal 117426).
What is the square root of 40726?
About 201.8068.
Is 40726 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 40726?
It is a composite number with 8 divisors.