The number 29801
29801 is a composite number with 4 divisors. Its prime factorisation is 17 × 1753. Divisors (4): 1, 17, 1753, 29801.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 29801: a semiprime: 17 × 1753, the product of two primes.
- 2
29801 is composite. Its prime factorisation is
- 3
The divisors add up to 31572; without 29801 itself that is 1771, so 29801 is deficient (1771 is less than 29801). Euler's totient φ(29801) = 28032 numbers up to 29801 share no factor with it.
- 4
The digits of 29801 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 121 steps to reach 1.
LaTeX source of the formulas on this page
\[ 29801 = 17 \times 1753 \]
29801 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 31572 |
| Euler totient φ(n) | 28032 |
| Square | 888099601 |
| Cube | 26466256209401 |
| Square root | 172.629661 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 121 |
| Scientific notation | 2.9801 × |
29801 in other forms
| Form | Value |
|---|---|
| In words | twenty-nine thousand eight hundred and one |
| Binary (base 2) | 111010001101001 |
| Octal (base 8) | 72151 |
| Hexadecimal (base 16) | 7469 |
| Base 3 | 1111212202 |
| As time | 29801 seconds = 8 h 16 min 41 s |
Is 29801 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 2) | 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 2) | 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 29801 a prime number?
No. 29801 = 17 × 1753, so it is divisible by 17.
What are the factors of 29801?
1, 17, 1753, 29801.
What is 29801 in binary?
111010001101001 (hexadecimal 7469, octal 72151).
What is the square root of 29801?
About 172.6297.
Is 29801 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 29801?
29801 is a semiprime: 17 × 1753, the product of two primes.