The number 61402
61402 is a composite number with 8 divisors. Its prime factorisation is 2 × 11 × 2791. Divisors (8): 1, 2, 11, 22, 2791, 5582, 30701, 61402.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61402 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61402 is composite. Its prime factorisation is
- 3
The divisors add up to 100512; without 61402 itself that is 39110, so 61402 is deficient (39110 is less than 61402). Euler's totient φ(61402) = 27900 numbers up to 61402 share no factor with it.
- 4
The digits of 61402 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 179 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61402 = 2 \times 11 \times 2791 \]
61402 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 100512 |
| Euler totient φ(n) | 27900 |
| Square | 3770205604 |
| Cube | 231498164496808 |
| Square root | 247.794270 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 179 |
| Scientific notation | 6.1402 × |
61402 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and two |
| Binary (base 2) | 1110111111011010 |
| Octal (base 8) | 167732 |
| Hexadecimal (base 16) | EFDA |
| Base 3 | 10010020011 |
| As time | 61402 seconds = 17 h 3 min 22 s |
Is 61402 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (61402 ÷ 2 = 30701) | 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 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 4) | 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 4) | 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 | Yes (61402 ÷ 11 = 5582) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61402 a prime number?
No. 61402 = 2 × 11 × 2791, so it is divisible by 2.
What are the factors of 61402?
1, 2, 11, 22, 2791, 5582, 30701, 61402.
What is 61402 in binary?
1110111111011010 (hexadecimal EFDA, octal 167732).
What is the square root of 61402?
About 247.7943.
Is 61402 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 61402?
It is a composite number with 8 divisors.