The number 40030
40030 is a composite number with 8 divisors. Its prime factorisation is 2 × 5 × 4003. Divisors (8): 1, 2, 5, 10, 4003, 8006, 20015, 40030.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
40030 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
40030 is composite. Its prime factorisation is
- 3
The divisors add up to 72072; without 40030 itself that is 32042, so 40030 is deficient (32042 is less than 40030). Euler's totient φ(40030) = 16008 numbers up to 40030 share no factor with it.
- 4
The digits of 40030 add up to 7, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 67 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40030 = 2 \times 5 \times 4003 \]
40030 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 72072 |
| Euler totient φ(n) | 16008 |
| Square | 1602400900 |
| Cube | 64144108027000 |
| Square root | 200.074986 |
| Digit sum / digital root | 7 / 7 |
| Collatz steps to 1 | 67 |
| Scientific notation | 4.003 × |
40030 in other forms
| Form | Value |
|---|---|
| In words | forty thousand and thirty |
| Binary (base 2) | 1001110001011110 |
| Octal (base 8) | 116136 |
| Hexadecimal (base 16) | 9C5E |
| Base 3 | 2000220121 |
| As time | 40030 seconds = 11 h 7 min 10 s |
Is 40030 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (40030 ÷ 2 = 20015) | 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 (40030 ÷ 5 = 8006) | 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 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (40030 ÷ 10 = 4003) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | 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 40030 a prime number?
No. 40030 = 2 × 5 × 4003, so it is divisible by 2.
What are the factors of 40030?
1, 2, 5, 10, 4003, 8006, 20015, 40030.
What is 40030 in binary?
1001110001011110 (hexadecimal 9C5E, octal 116136).
What is the square root of 40030?
About 200.0750.
Is 40030 divisible by 3?
No. Its digits add up to 7, which is not a multiple of 3.
What is special about the number 40030?
It is a composite number with 8 divisors.