The number 3387
3387 is a composite number with 4 divisors. Its prime factorisation is 3 × 1129. Divisors (4): 1, 3, 1129, 3387.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3387: a semiprime: 3 × 1129, the product of two primes.
- 2
3387 is composite. Its prime factorisation is
- 3
The divisors add up to 4520; without 3387 itself that is 1133, so 3387 is deficient (1133 is less than 3387). Euler's totient φ(3387) = 2256 numbers up to 3387 share no factor with it.
- 4
The digits of 3387 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 43 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3387 = 3 \times 1129 \]
3387 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 4520 |
| Euler totient φ(n) | 2256 |
| Square | 11471769 |
| Cube | 38854881603 |
| Square root | 58.197938 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 43 |
| Scientific notation | 3.387 × |
3387 in other forms
| Form | Value |
|---|---|
| In words | three thousand three hundred and eighty-seven |
| Roman numerals | MMMCCCLXXXVII |
| Binary (base 2) | 110100111011 |
| Octal (base 8) | 6473 |
| Hexadecimal (base 16) | D3B |
| Base 3 | 11122110 |
| As time | 3387 seconds = 56 min 27 s |
Is 3387 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 | Yes (3387 ÷ 3 = 1129) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 3387 a prime number?
No. 3387 = 3 × 1129, so it is divisible by 3.
What are the factors of 3387?
1, 3, 1129, 3387.
What is 3387 in binary?
110100111011 (hexadecimal D3B, octal 6473).
What is the square root of 3387?
About 58.1979.
What is 3387 in Roman numerals?
MMMCCCLXXXVII.
Is 3387 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 3387?
3387 is a semiprime: 3 × 1129, the product of two primes.