The number 77018
77018 is a composite number with 8 divisors. Its prime factorisation is 2 × 97 × 397. Divisors (8): 1, 2, 97, 194, 397, 794, 38509, 77018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
77018 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
77018 is composite. Its prime factorisation is
- 3
The divisors add up to 117012; without 77018 itself that is 39994, so 77018 is deficient (39994 is less than 77018). Euler's totient φ(77018) = 38016 numbers up to 77018 share no factor with it.
- 4
The digits of 77018 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 50 steps to reach 1.
LaTeX source of the formulas on this page
\[ 77018 = 2 \times 97 \times 397 \]
77018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 117012 |
| Euler totient φ(n) | 38016 |
| Square | 5931772324 |
| Cube | 456853240849832 |
| Square root | 277.521170 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 50 |
| Scientific notation | 7.7018 × |
77018 in other forms
| Form | Value |
|---|---|
| In words | seventy-seven thousand and eighteen |
| Binary (base 2) | 10010110011011010 |
| Octal (base 8) | 226332 |
| Hexadecimal (base 16) | 12CDA |
| Base 3 | 10220122112 |
| As time | 77018 seconds = 21 h 23 min 38 s |
Is 77018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (77018 ÷ 2 = 38509) | 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 3) | 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 4) | 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 77018 a prime number?
No. 77018 = 2 × 97 × 397, so it is divisible by 2.
What are the factors of 77018?
1, 2, 97, 194, 397, 794, 38509, 77018.
What is 77018 in binary?
10010110011011010 (hexadecimal 12CDA, octal 226332).
What is the square root of 77018?
About 277.5212.
Is 77018 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 77018?
It is a composite number with 8 divisors.