The number 34987
34987 is a composite number with 4 divisors. Its prime factorisation is 59 × 593. Divisors (4): 1, 59, 593, 34987.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 34987: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 59 × 593, the product of two primes.
- 2
34987 is composite. Its prime factorisation is
- 3
The divisors add up to 35640; without 34987 itself that is 653, so 34987 is deficient (653 is less than 34987). Euler's totient φ(34987) = 34336 numbers up to 34987 share no factor with it.
- 4
The digits of 34987 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 142 steps to reach 1.
LaTeX source of the formulas on this page
\[ 34987 = 59 \times 593 \]
34987 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 35640 |
| Euler totient φ(n) | 34336 |
| Square | 1224090169 |
| Cube | 42827242742803 |
| Square root | 187.048122 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 142 |
| Scientific notation | 3.4987 × |
34987 in other forms
| Form | Value |
|---|---|
| In words | thirty-four thousand nine hundred and eighty-seven |
| Binary (base 2) | 1000100010101011 |
| Octal (base 8) | 104253 |
| Hexadecimal (base 16) | 88AB |
| Base 3 | 1202222211 |
| As time | 34987 seconds = 9 h 43 min 7 s |
Is 34987 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 1) | 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 1) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 34987 a prime number?
No. 34987 = 59 × 593, so it is divisible by 59.
What are the factors of 34987?
1, 59, 593, 34987.
What is 34987 in binary?
1000100010101011 (hexadecimal 88AB, octal 104253).
What is the square root of 34987?
About 187.0481.
Is 34987 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 34987?
34987 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 59 × 593, the product of two primes.