The number 80450
80450 is a composite number with 12 divisors. Its prime factorisation is 2 × × 1609. Divisors (12): 1, 2, 5, 10, 25, 50, 1609, 3218, 8045, 16090, 40225, 80450.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80450 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80450 is composite. Its prime factorisation is
- 3
The divisors add up to 149730; without 80450 itself that is 69280, so 80450 is deficient (69280 is less than 80450). Euler's totient φ(80450) = 32160 numbers up to 80450 share no factor with it.
- 4
The digits of 80450 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 120 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80450 = 2 \times 5^{2} \times 1609 \]80450 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 149730 |
| Euler totient φ(n) | 32160 |
| Square | 6472202500 |
| Cube | 520688691125000 |
| Square root | 283.637092 (= 5√3218) |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 120 |
| Scientific notation | 8.045 × |
80450 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand four hundred and fifty |
| Binary (base 2) | 10011101001000010 |
| Octal (base 8) | 235102 |
| Hexadecimal (base 16) | 13A42 |
| Base 3 | 11002100122 |
| As time | 80450 seconds = 22 h 20 min 50 s |
Is 80450 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80450 ÷ 2 = 40225) | 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 (80450 ÷ 5 = 16090) | 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 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 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 (80450 ÷ 10 = 8045) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80450 a prime number?
No. 80450 = 2 × × 1609, so it is divisible by 2.
What are the factors of 80450?
1, 2, 5, 10, 25, 50, 1609, 3218, 8045, 16090, 40225, 80450.
What is 80450 in binary?
10011101001000010 (hexadecimal 13A42, octal 235102).
What is the square root of 80450?
About 283.6371, exactly 5√3218.
Is 80450 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 80450?
It is a composite number with 12 divisors.