The number 88990
88990 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 11 × 809. Divisors (16): 1, 2, 5, 10, 11, 22, 55, 110, 809, 1618, 4045, 8090, 8899, 17798, 44495, 88990.
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How to work it out
- 1
88990 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
88990 is composite. Its prime factorisation is
- 3
The divisors add up to 174960; without 88990 itself that is 85970, so 88990 is deficient (85970 is less than 88990). Euler's totient φ(88990) = 32320 numbers up to 88990 share no factor with it.
- 4
The digits of 88990 add up to 34, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 239 steps to reach 1.
LaTeX source of the formulas on this page
\[ 88990 = 2 \times 5 \times 11 \times 809 \]
88990 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 174960 |
| Euler totient φ(n) | 32320 |
| Square | 7919220100 |
| Cube | 704731396699000 |
| Square root | 298.311917 |
| Digit sum / digital root | 34 / 7 |
| Collatz steps to 1 | 239 |
| Scientific notation | 8.899 × |
88990 in other forms
| Form | Value |
|---|---|
| In words | eighty-eight thousand nine hundred and ninety |
| Binary (base 2) | 10101101110011110 |
| Octal (base 8) | 255636 |
| Hexadecimal (base 16) | 15B9E |
| Base 3 | 11112001221 |
| As time | 88990 seconds = 24 h 43 min 10 s |
Is 88990 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (88990 ÷ 2 = 44495) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (88990 ÷ 5 = 17798) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (88990 ÷ 10 = 8899) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (88990 ÷ 11 = 8090) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 88990 a prime number?
No. 88990 = 2 × 5 × 11 × 809, so it is divisible by 2.
What are the factors of 88990?
1, 2, 5, 10, 11, 22, 55, 110, 809, 1618, 4045, 8090, 8899, 17798, 44495, 88990.
What is 88990 in binary?
10101101110011110 (hexadecimal 15B9E, octal 255636).
What is the square root of 88990?
About 298.3119.
Is 88990 divisible by 3?
No. Its digits add up to 34, which is not a multiple of 3.
What is special about the number 88990?
It is a composite number with 16 divisors.