The number 40022
40022 is a composite number with 4 divisors. Its prime factorisation is 2 × 20011. Divisors (4): 1, 2, 20011, 40022.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40022: a semiprime: 2 × 20011, the product of two primes.
- 2
40022 is composite. Its prime factorisation is
- 3
The divisors add up to 60036; without 40022 itself that is 20014, so 40022 is deficient (20014 is less than 40022). Euler's totient φ(40022) = 20010 numbers up to 40022 share no factor with it.
- 4
The digits of 40022 add up to 8, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 181 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40022 = 2 \times 20011 \]
40022 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 60036 |
| Euler totient φ(n) | 20010 |
| Square | 1601760484 |
| Cube | 64105658090648 |
| Square root | 200.054992 |
| Digit sum / digital root | 8 / 8 |
| Collatz steps to 1 | 181 |
| Scientific notation | 4.0022 × |
40022 in other forms
| Form | Value |
|---|---|
| In words | forty thousand and twenty-two |
| Binary (base 2) | 1001110001010110 |
| Octal (base 8) | 116126 |
| Hexadecimal (base 16) | 9C56 |
| Base 3 | 2000220022 |
| As time | 40022 seconds = 11 h 7 min 2 s |
Is 40022 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (40022 ÷ 2 = 20011) | 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 | No (remainder 2) | 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 6) | 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 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 40022 a prime number?
No. 40022 = 2 × 20011, so it is divisible by 2.
What are the factors of 40022?
1, 2, 20011, 40022.
What is 40022 in binary?
1001110001010110 (hexadecimal 9C56, octal 116126).
What is the square root of 40022?
About 200.0550.
Is 40022 divisible by 3?
No. Its digits add up to 8, which is not a multiple of 3.
What is special about the number 40022?
40022 is a semiprime: 2 × 20011, the product of two primes.