The number 47450
47450 is a composite number with 24 divisors. Its prime factorisation is 2 × × 13 × 73. Divisors (24): 1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 650, 730 … 47450.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47450 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47450 is composite. Its prime factorisation is
- 3
The divisors add up to 96348; without 47450 itself that is 48898, so 47450 is abundant (48898 is more than 47450). Euler's totient φ(47450) = 17280 numbers up to 47450 share no factor with it.
- 4
The digits of 47450 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 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47450 = 2 \times 5^{2} \times 13 \times 73 \]47450 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 96348 |
| Euler totient φ(n) | 17280 |
| Square | 2251502500 |
| Cube | 106833793625000 |
| Square root | 217.830209 (= 5√1898) |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.745 × |
47450 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and fifty |
| Binary (base 2) | 1011100101011010 |
| Octal (base 8) | 134532 |
| Hexadecimal (base 16) | B95A |
| Base 3 | 2102002102 |
| As time | 47450 seconds = 13 h 10 min 50 s |
Is 47450 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47450 ÷ 2 = 23725) | 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 (47450 ÷ 5 = 9490) | 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 4) | 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (47450 ÷ 10 = 4745) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 47450 a prime number?
No. 47450 = 2 × × 13 × 73, so it is divisible by 2.
What are the factors of 47450?
1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 650, 730, 949, 1825, 1898, 3650, 4745, 9490, 23725, 47450.
What is 47450 in binary?
1011100101011010 (hexadecimal B95A, octal 134532).
What is the square root of 47450?
About 217.8302, exactly 5√1898.
Is 47450 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 47450?
It is a composite number with 24 divisors.