The number 794
794 is a composite number with 4 divisors. Its prime factorisation is 2 × 397. Divisors (4): 1, 2, 397, 794.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 794: a semiprime: 2 × 397, the product of two primes.
- 2
794 is composite. Its prime factorisation is
- 3
The divisors add up to 1194; without 794 itself that is 400, so 794 is deficient (400 is less than 794). Euler's totient φ(794) = 396 numbers up to 794 share no factor with it.
- 4
The digits of 794 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 28 steps to reach 1.
LaTeX source of the formulas on this page
\[ 794 = 2 \times 397 \]
794 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1194 |
| Euler totient φ(n) | 396 |
| Square | 630436 |
| Cube | 500566184 |
| Square root | 28.178006 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 28 |
| Scientific notation | 7.94 × |
794 in other forms
| Form | Value |
|---|---|
| In words | seven hundred and ninety-four |
| Roman numerals | DCCXCIV |
| Binary (base 2) | 1100011010 |
| Octal (base 8) | 1432 |
| Hexadecimal (base 16) | 31A |
| Base 3 | 1002102 |
| As time | 794 seconds = 13 min 14 s |
Is 794 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (794 ÷ 2 = 397) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 794 a prime number?
No. 794 = 2 × 397, so it is divisible by 2.
What are the factors of 794?
1, 2, 397, 794.
What is 794 in binary?
1100011010 (hexadecimal 31A, octal 1432).
What is the square root of 794?
About 28.1780.
What is 794 in Roman numerals?
DCCXCIV.
Is 794 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 794?
794 is a semiprime: 2 × 397, the product of two primes.