The number 61478
61478 is a composite number with 8 divisors. Its prime factorisation is 2 × 59 × 521. Divisors (8): 1, 2, 59, 118, 521, 1042, 30739, 61478.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61478 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61478 is composite. Its prime factorisation is
- 3
The divisors add up to 93960; without 61478 itself that is 32482, so 61478 is deficient (32482 is less than 61478). Euler's totient φ(61478) = 30160 numbers up to 61478 share no factor with it.
- 4
The digits of 61478 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 104 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61478 = 2 \times 59 \times 521 \]
61478 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 93960 |
| Euler totient φ(n) | 30160 |
| Square | 3779544484 |
| Cube | 232358835787352 |
| Square root | 247.947575 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 104 |
| Scientific notation | 6.1478 × |
61478 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and seventy-eight |
| Binary (base 2) | 1111000000100110 |
| Octal (base 8) | 170046 |
| Hexadecimal (base 16) | F026 |
| Base 3 | 10010022222 |
| As time | 61478 seconds = 17 h 4 min 38 s |
Is 61478 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (61478 ÷ 2 = 30739) | 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 3) | 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 6) | 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 8) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61478 a prime number?
No. 61478 = 2 × 59 × 521, so it is divisible by 2.
What are the factors of 61478?
1, 2, 59, 118, 521, 1042, 30739, 61478.
What is 61478 in binary?
1111000000100110 (hexadecimal F026, octal 170046).
What is the square root of 61478?
About 247.9476.
Is 61478 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 61478?
It is a composite number with 8 divisors.