The number 74087
74087 is a composite number with 8 divisors. Its prime factorisation is 13 × 41 × 139. Divisors (8): 1, 13, 41, 139, 533, 1807, 5699, 74087.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
74087 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
74087 is composite. Its prime factorisation is
- 3
The divisors add up to 82320; without 74087 itself that is 8233, so 74087 is deficient (8233 is less than 74087). Euler's totient φ(74087) = 66240 numbers up to 74087 share no factor with it.
- 4
The digits of 74087 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 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74087 = 13 \times 41 \times 139 \]
74087 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 82320 |
| Euler totient φ(n) | 66240 |
| Square | 5488883569 |
| Cube | 406654916976503 |
| Square root | 272.189272 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 94 |
| Scientific notation | 7.4087 × |
74087 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand and eighty-seven |
| Binary (base 2) | 10010000101100111 |
| Octal (base 8) | 220547 |
| Hexadecimal (base 16) | 12167 |
| Base 3 | 10202121222 |
| As time | 74087 seconds = 20 h 34 min 47 s |
Is 74087 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 | No (remainder 2) | 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 | 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 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 7) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 74087 a prime number?
No. 74087 = 13 × 41 × 139, so it is divisible by 13.
What are the factors of 74087?
1, 13, 41, 139, 533, 1807, 5699, 74087.
What is 74087 in binary?
10010000101100111 (hexadecimal 12167, octal 220547).
What is the square root of 74087?
About 272.1893.
Is 74087 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 74087?
It is a composite number with 8 divisors.