The number 80090
80090 is a composite number with 8 divisors. Its prime factorisation is 2 × 5 × 8009. Divisors (8): 1, 2, 5, 10, 8009, 16018, 40045, 80090.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80090 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80090 is composite. Its prime factorisation is
- 3
The divisors add up to 144180; without 80090 itself that is 64090, so 80090 is deficient (64090 is less than 80090). Euler's totient φ(80090) = 32032 numbers up to 80090 share no factor with it.
- 4
The digits of 80090 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 213 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80090 = 2 \times 5 \times 8009 \]
80090 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 144180 |
| Euler totient φ(n) | 32032 |
| Square | 6414408100 |
| Cube | 513729944729000 |
| Square root | 283.001767 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 213 |
| Scientific notation | 8.009 × |
80090 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand and ninety |
| Binary (base 2) | 10011100011011010 |
| Octal (base 8) | 234332 |
| Hexadecimal (base 16) | 138DA |
| Base 3 | 11001212022 |
| As time | 80090 seconds = 22 h 14 min 50 s |
Is 80090 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80090 ÷ 2 = 40045) | 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 | Yes (80090 ÷ 5 = 16018) | 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 3) | 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 | Yes (80090 ÷ 10 = 8009) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 80090 a prime number?
No. 80090 = 2 × 5 × 8009, so it is divisible by 2.
What are the factors of 80090?
1, 2, 5, 10, 8009, 16018, 40045, 80090.
What is 80090 in binary?
10011100011011010 (hexadecimal 138DA, octal 234332).
What is the square root of 80090?
About 283.0018.
Is 80090 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 80090?
It is a composite number with 8 divisors.