The number 47803
47803 is a composite number with 4 divisors. Its prime factorisation is 7 × 6829. Divisors (4): 1, 7, 6829, 47803.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47803: a semiprime: 7 × 6829, the product of two primes.
- 2
47803 is composite. Its prime factorisation is
- 3
The divisors add up to 54640; without 47803 itself that is 6837, so 47803 is deficient (6837 is less than 47803). Euler's totient φ(47803) = 40968 numbers up to 47803 share no factor with it.
- 4
The digits of 47803 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47803 = 7 \times 6829 \]
47803 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 54640 |
| Euler totient φ(n) | 40968 |
| Square | 2285126809 |
| Cube | 109235916850627 |
| Square root | 218.638972 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.7803 × |
47803 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand eight hundred and three |
| Binary (base 2) | 1011101010111011 |
| Octal (base 8) | 135273 |
| Hexadecimal (base 16) | BABB |
| Base 3 | 2102120111 |
| As time | 47803 seconds = 13 h 16 min 43 s |
Is 47803 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (47803 ÷ 7 = 6829) | 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 4) | 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 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47803 a prime number?
No. 47803 = 7 × 6829, so it is divisible by 7.
What are the factors of 47803?
1, 7, 6829, 47803.
What is 47803 in binary?
1011101010111011 (hexadecimal BABB, octal 135273).
What is the square root of 47803?
About 218.6390.
Is 47803 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 47803?
47803 is a semiprime: 7 × 6829, the product of two primes.