The number 43090
43090 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 31 × 139. Divisors (16): 1, 2, 5, 10, 31, 62, 139, 155, 278, 310, 695, 1390, 4309, 8618, 21545, 43090.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
43090 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
43090 is composite. Its prime factorisation is
- 3
The divisors add up to 80640; without 43090 itself that is 37550, so 43090 is deficient (37550 is less than 43090). Euler's totient φ(43090) = 16560 numbers up to 43090 share no factor with it.
- 4
The digits of 43090 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 194 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43090 = 2 \times 5 \times 31 \times 139 \]
43090 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 80640 |
| Euler totient φ(n) | 16560 |
| Square | 1856748100 |
| Cube | 80007275629000 |
| Square root | 207.581309 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 194 |
| Scientific notation | 4.309 × |
43090 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand and ninety |
| Binary (base 2) | 1010100001010010 |
| Octal (base 8) | 124122 |
| Hexadecimal (base 16) | A852 |
| Base 3 | 2012002221 |
| As time | 43090 seconds = 11 h 58 min 10 s |
Is 43090 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (43090 ÷ 2 = 21545) | 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 (43090 ÷ 5 = 8618) | 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 5) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (43090 ÷ 10 = 4309) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 43090 a prime number?
No. 43090 = 2 × 5 × 31 × 139, so it is divisible by 2.
What are the factors of 43090?
1, 2, 5, 10, 31, 62, 139, 155, 278, 310, 695, 1390, 4309, 8618, 21545, 43090.
What is 43090 in binary?
1010100001010010 (hexadecimal A852, octal 124122).
What is the square root of 43090?
About 207.5813.
Is 43090 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 43090?
It is a composite number with 16 divisors.