The number 47402
47402 is a composite number with 8 divisors. Its prime factorisation is 2 × 137 × 173. Divisors (8): 1, 2, 137, 173, 274, 346, 23701, 47402.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47402 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47402 is composite. Its prime factorisation is
- 3
The divisors add up to 72036; without 47402 itself that is 24634, so 47402 is deficient (24634 is less than 47402). Euler's totient φ(47402) = 23392 numbers up to 47402 share no factor with it.
- 4
The digits of 47402 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47402 = 2 \times 137 \times 173 \]
47402 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 72036 |
| Euler totient φ(n) | 23392 |
| Square | 2246949604 |
| Cube | 106509905128808 |
| Square root | 217.720004 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.7402 × |
47402 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and two |
| Binary (base 2) | 1011100100101010 |
| Octal (base 8) | 134452 |
| Hexadecimal (base 16) | B92A |
| Base 3 | 2102000122 |
| As time | 47402 seconds = 13 h 10 min 2 s |
Is 47402 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (47402 ÷ 2 = 23701) | 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 | No (remainder 2) | 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 5) | 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 8) | 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 3) | 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 47402 a prime number?
No. 47402 = 2 × 137 × 173, so it is divisible by 2.
What are the factors of 47402?
1, 2, 137, 173, 274, 346, 23701, 47402.
What is 47402 in binary?
1011100100101010 (hexadecimal B92A, octal 134452).
What is the square root of 47402?
About 217.7200.
Is 47402 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 47402?
It is a composite number with 8 divisors.