The number 40070
40070 is a composite number with 8 divisors. Its prime factorisation is 2 × 5 × 4007. Divisors (8): 1, 2, 5, 10, 4007, 8014, 20035, 40070.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
40070 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
40070 is composite. Its prime factorisation is
- 3
The divisors add up to 72144; without 40070 itself that is 32074, so 40070 is deficient (32074 is less than 40070). Euler's totient φ(40070) = 16024 numbers up to 40070 share no factor with it.
- 4
The digits of 40070 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 93 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40070 = 2 \times 5 \times 4007 \]
40070 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 72144 |
| Euler totient φ(n) | 16024 |
| Square | 1605604900 |
| Cube | 64336588343000 |
| Square root | 200.174924 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 93 |
| Scientific notation | 4.007 × |
40070 in other forms
| Form | Value |
|---|---|
| In words | forty thousand and seventy |
| Binary (base 2) | 1001110010000110 |
| Octal (base 8) | 116206 |
| Hexadecimal (base 16) | 9C86 |
| Base 3 | 2000222002 |
| As time | 40070 seconds = 11 h 7 min 50 s |
Is 40070 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (40070 ÷ 2 = 20035) | 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 (40070 ÷ 5 = 8014) | 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 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 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 (40070 ÷ 10 = 4007) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 40070 a prime number?
No. 40070 = 2 × 5 × 4007, so it is divisible by 2.
What are the factors of 40070?
1, 2, 5, 10, 4007, 8014, 20035, 40070.
What is 40070 in binary?
1001110010000110 (hexadecimal 9C86, octal 116206).
What is the square root of 40070?
About 200.1749.
Is 40070 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 40070?
It is a composite number with 8 divisors.