The number 87074
87074 is a composite number with 16 divisors. Its prime factorisation is 2 × 13 × 17 × 197. Divisors (16): 1, 2, 13, 17, 26, 34, 197, 221, 394, 442, 2561, 3349, 5122, 6698, 43537, 87074.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 87074: a Harshad number: divisible by its digit sum 26.
- 2
87074 is composite. Its prime factorisation is
- 3
The divisors add up to 149688; without 87074 itself that is 62614, so 87074 is deficient (62614 is less than 87074). Euler's totient φ(87074) = 37632 numbers up to 87074 share no factor with it.
- 4
The digits of 87074 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 58 steps to reach 1.
LaTeX source of the formulas on this page
\[ 87074 = 2 \times 13 \times 17 \times 197 \]
87074 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 149688 |
| Euler totient φ(n) | 37632 |
| Square | 7581881476 |
| Cube | 660184747641224 |
| Square root | 295.083039 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 58 |
| Scientific notation | 8.7074 × |
87074 in other forms
| Form | Value |
|---|---|
| In words | eighty-seven thousand and seventy-four |
| Binary (base 2) | 10101010000100010 |
| Octal (base 8) | 252042 |
| Hexadecimal (base 16) | 15422 |
| Base 3 | 11102102222 |
| As time | 87074 seconds = 24 h 11 min 14 s |
Is 87074 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (87074 ÷ 2 = 43537) | 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 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 | No (remainder 2) | 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 9) | 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 87074 a prime number?
No. 87074 = 2 × 13 × 17 × 197, so it is divisible by 2.
What are the factors of 87074?
1, 2, 13, 17, 26, 34, 197, 221, 394, 442, 2561, 3349, 5122, 6698, 43537, 87074.
What is 87074 in binary?
10101010000100010 (hexadecimal 15422, octal 252042).
What is the square root of 87074?
About 295.0830.
Is 87074 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 87074?
87074 is a Harshad number: divisible by its digit sum 26.