The number 43493
43493 is a composite number with 8 divisors. Its prime factorisation is 23 × 31 × 61. Divisors (8): 1, 23, 31, 61, 713, 1403, 1891, 43493.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 43493: a Harshad number: divisible by its digit sum 23.
- 2
43493 is composite. Its prime factorisation is
- 3
The divisors add up to 47616; without 43493 itself that is 4123, so 43493 is deficient (4123 is less than 43493). Euler's totient φ(43493) = 39600 numbers up to 43493 share no factor with it.
- 4
The digits of 43493 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 132 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43493 = 23 \times 31 \times 61 \]
43493 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 47616 |
| Euler totient φ(n) | 39600 |
| Square | 1891641049 |
| Cube | 82273144144157 |
| Square root | 208.549754 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 132 |
| Scientific notation | 4.3493 × |
43493 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand four hundred and ninety-three |
| Binary (base 2) | 1010100111100101 |
| Octal (base 8) | 124745 |
| Hexadecimal (base 16) | A9E5 |
| Base 3 | 2012122212 |
| As time | 43493 seconds = 12 h 4 min 53 s |
Is 43493 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43493 a prime number?
No. 43493 = 23 × 31 × 61, so it is divisible by 23.
What are the factors of 43493?
1, 23, 31, 61, 713, 1403, 1891, 43493.
What is 43493 in binary?
1010100111100101 (hexadecimal A9E5, octal 124745).
What is the square root of 43493?
About 208.5498.
Is 43493 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 43493?
43493 is a Harshad number: divisible by its digit sum 23.