The number 43670
43670 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 11 × 397. Divisors (16): 1, 2, 5, 10, 11, 22, 55, 110, 397, 794, 1985, 3970, 4367, 8734, 21835, 43670.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
43670 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
43670 is composite. Its prime factorisation is
- 3
The divisors add up to 85968; without 43670 itself that is 42298, so 43670 is deficient (42298 is less than 43670). Euler's totient φ(43670) = 15840 numbers up to 43670 share no factor with it.
- 4
The digits of 43670 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 70 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43670 = 2 \times 5 \times 11 \times 397 \]
43670 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 85968 |
| Euler totient φ(n) | 15840 |
| Square | 1907068900 |
| Cube | 83281698863000 |
| Square root | 208.973683 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 70 |
| Scientific notation | 4.367 × |
43670 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand six hundred and seventy |
| Binary (base 2) | 1010101010010110 |
| Octal (base 8) | 125226 |
| Hexadecimal (base 16) | AA96 |
| Base 3 | 2012220102 |
| As time | 43670 seconds = 12 h 7 min 50 s |
Is 43670 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (43670 ÷ 2 = 21835) | 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 (43670 ÷ 5 = 8734) | 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 4) | 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (43670 ÷ 10 = 4367) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (43670 ÷ 11 = 3970) | 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 43670 a prime number?
No. 43670 = 2 × 5 × 11 × 397, so it is divisible by 2.
What are the factors of 43670?
1, 2, 5, 10, 11, 22, 55, 110, 397, 794, 1985, 3970, 4367, 8734, 21835, 43670.
What is 43670 in binary?
1010101010010110 (hexadecimal AA96, octal 125226).
What is the square root of 43670?
About 208.9737.
Is 43670 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 43670?
It is a composite number with 16 divisors.