The number 38423
38423 is a composite number with 8 divisors. Its prime factorisation is 7 × 11 × 499. Divisors (8): 1, 7, 11, 77, 499, 3493, 5489, 38423.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
38423 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
38423 is composite. Its prime factorisation is
- 3
The divisors add up to 48000; without 38423 itself that is 9577, so 38423 is deficient (9577 is less than 38423). Euler's totient φ(38423) = 29880 numbers up to 38423 share no factor with it.
- 4
The digits of 38423 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 80 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38423 = 7 \times 11 \times 499 \]
38423 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 48000 |
| Euler totient φ(n) | 29880 |
| Square | 1476326929 |
| Cube | 56724909592967 |
| Square root | 196.017856 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 80 |
| Scientific notation | 3.8423 × |
38423 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand four hundred and twenty-three |
| Binary (base 2) | 1001011000010111 |
| Octal (base 8) | 113027 |
| Hexadecimal (base 16) | 9617 |
| Base 3 | 1221201002 |
| As time | 38423 seconds = 10 h 40 min 23 s |
Is 38423 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 3) | 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 | Yes (38423 ÷ 7 = 5489) | 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 7) | 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 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (38423 ÷ 11 = 3493) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38423 a prime number?
No. 38423 = 7 × 11 × 499, so it is divisible by 7.
What are the factors of 38423?
1, 7, 11, 77, 499, 3493, 5489, 38423.
What is 38423 in binary?
1001011000010111 (hexadecimal 9617, octal 113027).
What is the square root of 38423?
About 196.0179.
Is 38423 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 38423?
It is a composite number with 8 divisors.