The number 36221
36221 is a composite number with 4 divisors. Its prime factorisation is 29 × 1249. Divisors (4): 1, 29, 1249, 36221.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 36221: a semiprime: 29 × 1249, the product of two primes.
- 2
36221 is composite. Its prime factorisation is
- 3
The divisors add up to 37500; without 36221 itself that is 1279, so 36221 is deficient (1279 is less than 36221). Euler's totient φ(36221) = 34944 numbers up to 36221 share no factor with it.
- 4
The digits of 36221 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 41 steps to reach 1.
LaTeX source of the formulas on this page
\[ 36221 = 29 \times 1249 \]
36221 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 37500 |
| Euler totient φ(n) | 34944 |
| Square | 1311960841 |
| Cube | 47520533621861 |
| Square root | 190.318155 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 41 |
| Scientific notation | 3.6221 × |
36221 in other forms
| Form | Value |
|---|---|
| In words | thirty-six thousand two hundred and twenty-one |
| Binary (base 2) | 1000110101111101 |
| Octal (base 8) | 106575 |
| Hexadecimal (base 16) | 8D7D |
| Base 3 | 1211200112 |
| As time | 36221 seconds = 10 h 3 min 41 s |
Is 36221 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 3) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 9) | 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 36221 a prime number?
No. 36221 = 29 × 1249, so it is divisible by 29.
What are the factors of 36221?
1, 29, 1249, 36221.
What is 36221 in binary?
1000110101111101 (hexadecimal 8D7D, octal 106575).
What is the square root of 36221?
About 190.3182.
Is 36221 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 36221?
36221 is a semiprime: 29 × 1249, the product of two primes.