The number 24401
24401 is a composite number with 4 divisors. Its prime factorisation is 13 × 1877. Divisors (4): 1, 13, 1877, 24401.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24401: a semiprime: 13 × 1877, the product of two primes.
- 2
24401 is composite. Its prime factorisation is
- 3
The divisors add up to 26292; without 24401 itself that is 1891, so 24401 is deficient (1891 is less than 24401). Euler's totient φ(24401) = 22512 numbers up to 24401 share no factor with it.
- 4
The digits of 24401 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 126 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24401 = 13 \times 1877 \]
24401 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 26292 |
| Euler totient φ(n) | 22512 |
| Square | 595408801 |
| Cube | 14528570153201 |
| Square root | 156.208194 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 126 |
| Scientific notation | 2.4401 × |
24401 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand four hundred and one |
| Binary (base 2) | 101111101010001 |
| Octal (base 8) | 57521 |
| Hexadecimal (base 16) | 5F51 |
| Base 3 | 1020110202 |
| As time | 24401 seconds = 6 h 46 min 41 s |
Is 24401 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 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 1) | 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 | No (remainder 1) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24401 a prime number?
No. 24401 = 13 × 1877, so it is divisible by 13.
What are the factors of 24401?
1, 13, 1877, 24401.
What is 24401 in binary?
101111101010001 (hexadecimal 5F51, octal 57521).
What is the square root of 24401?
About 156.2082.
Is 24401 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 24401?
24401 is a semiprime: 13 × 1877, the product of two primes.