The number 8855
8855 is a composite number with 16 divisors. Its prime factorisation is 5 × 7 × 11 × 23. Divisors (16): 1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 8855.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
8855 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
8855 is composite. Its prime factorisation is
- 3
The divisors add up to 13824; without 8855 itself that is 4969, so 8855 is deficient (4969 is less than 8855). Euler's totient φ(8855) = 5280 numbers up to 8855 share no factor with it.
- 4
The digits of 8855 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 8855 = 5 \times 7 \times 11 \times 23 \]
8855 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 13824 |
| Euler totient φ(n) | 5280 |
| Square | 78411025 |
| Cube | 694329626375 |
| Square root | 94.101010 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 96 |
| Scientific notation | 8.855 × |
8855 in other forms
| Form | Value |
|---|---|
| In words | eight thousand eight hundred and fifty-five |
| Binary (base 2) | 10001010010111 |
| Octal (base 8) | 21227 |
| Hexadecimal (base 16) | 2297 |
| Base 3 | 110010222 |
| As time | 8855 seconds = 2 h 27 min 35 s |
Is 8855 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (8855 ÷ 5 = 1771) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (8855 ÷ 7 = 1265) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (8855 ÷ 11 = 805) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 8855 a prime number?
No. 8855 = 5 × 7 × 11 × 23, so it is divisible by 5.
What are the factors of 8855?
1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 8855.
What is 8855 in binary?
10001010010111 (hexadecimal 2297, octal 21227).
What is the square root of 8855?
About 94.1010.
Is 8855 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 8855?
It is a composite number with 16 divisors.