The number 7426
7426 is a composite number with 8 divisors. Its prime factorisation is 2 × 47 × 79. Divisors (8): 1, 2, 47, 79, 94, 158, 3713, 7426.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
7426 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
7426 is composite. Its prime factorisation is
- 3
The divisors add up to 11520; without 7426 itself that is 4094, so 7426 is deficient (4094 is less than 7426). Euler's totient φ(7426) = 3588 numbers up to 7426 share no factor with it.
- 4
The digits of 7426 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 70 steps to reach 1.
LaTeX source of the formulas on this page
\[ 7426 = 2 \times 47 \times 79 \]
7426 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 11520 |
| Euler totient φ(n) | 3588 |
| Square | 55145476 |
| Cube | 409510304776 |
| Square root | 86.174242 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 70 |
| Scientific notation | 7.426 × |
7426 in other forms
| Form | Value |
|---|---|
| In words | seven thousand four hundred and twenty-six |
| Binary (base 2) | 1110100000010 |
| Octal (base 8) | 16402 |
| Hexadecimal (base 16) | 1D02 |
| Base 3 | 101012001 |
| As time | 7426 seconds = 2 h 3 min 46 s |
Is 7426 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (7426 ÷ 2 = 3713) | 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 | No (remainder 6) | 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 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 1) | 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 7426 a prime number?
No. 7426 = 2 × 47 × 79, so it is divisible by 2.
What are the factors of 7426?
1, 2, 47, 79, 94, 158, 3713, 7426.
What is 7426 in binary?
1110100000010 (hexadecimal 1D02, octal 16402).
What is the square root of 7426?
About 86.1742.
Is 7426 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 7426?
It is a composite number with 8 divisors.