The number 87704
87704 is a composite number with 16 divisors. Its prime factorisation is × 19 × 577. Divisors (16): 1, 2, 4, 8, 19, 38, 76, 152, 577, 1154, 2308, 4616, 10963, 21926, 43852, 87704.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
87704 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
87704 is composite. Its prime factorisation is
- 3
The divisors add up to 173400; without 87704 itself that is 85696, so 87704 is deficient (85696 is less than 87704). Euler's totient φ(87704) = 41472 numbers up to 87704 share no factor with it.
- 4
The digits of 87704 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 45 steps to reach 1.
LaTeX source of the formulas on this page
\[ 87704 = 2^{3} \times 19 \times 577 \]87704 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 173400 |
| Euler totient φ(n) | 41472 |
| Square | 7691991616 |
| Cube | 674618432689664 |
| Square root | 296.148611 (= 2√21926) |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 45 |
| Scientific notation | 8.7704 × |
87704 in other forms
| Form | Value |
|---|---|
| In words | eighty-seven thousand seven hundred and four |
| Binary (base 2) | 10101011010011000 |
| Octal (base 8) | 253230 |
| Hexadecimal (base 16) | 15698 |
| Base 3 | 11110022022 |
| As time | 87704 seconds = 24 h 21 min 44 s |
Is 87704 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (87704 ÷ 2 = 43852) | 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 | Yes (87704 ÷ 4 = 21926) | 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 1) | 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 | Yes (87704 ÷ 8 = 10963) | 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 4) | 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 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 87704 a prime number?
No. 87704 = × 19 × 577, so it is divisible by 2.
What are the factors of 87704?
1, 2, 4, 8, 19, 38, 76, 152, 577, 1154, 2308, 4616, 10963, 21926, 43852, 87704.
What is 87704 in binary?
10101011010011000 (hexadecimal 15698, octal 253230).
What is the square root of 87704?
About 296.1486, exactly 2√21926.
Is 87704 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 87704?
It is a composite number with 16 divisors.