The number 38002
38002 is a composite number with 4 divisors. Its prime factorisation is 2 × 19001. Divisors (4): 1, 2, 19001, 38002.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38002: a semiprime: 2 × 19001, the product of two primes.
- 2
38002 is composite. Its prime factorisation is
- 3
The divisors add up to 57006; without 38002 itself that is 19004, so 38002 is deficient (19004 is less than 38002). Euler's totient φ(38002) = 19000 numbers up to 38002 share no factor with it.
- 4
The digits of 38002 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 54 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38002 = 2 \times 19001 \]
38002 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57006 |
| Euler totient φ(n) | 19000 |
| Square | 1444152004 |
| Cube | 54880664456008 |
| Square root | 194.941017 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 54 |
| Scientific notation | 3.8002 × |
38002 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand and two |
| Binary (base 2) | 1001010001110010 |
| Octal (base 8) | 112162 |
| Hexadecimal (base 16) | 9472 |
| Base 3 | 1221010111 |
| As time | 38002 seconds = 10 h 33 min 22 s |
Is 38002 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (38002 ÷ 2 = 19001) | 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 | No (remainder 2) | 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 6) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | 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 8) | 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 38002 a prime number?
No. 38002 = 2 × 19001, so it is divisible by 2.
What are the factors of 38002?
1, 2, 19001, 38002.
What is 38002 in binary?
1001010001110010 (hexadecimal 9472, octal 112162).
What is the square root of 38002?
About 194.9410.
Is 38002 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 38002?
38002 is a semiprime: 2 × 19001, the product of two primes.