The number 3722
3722 is a composite number with 4 divisors. Its prime factorisation is 2 × 1861. Divisors (4): 1, 2, 1861, 3722.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3722: a semiprime: 2 × 1861, the product of two primes.
- 2
3722 is composite. Its prime factorisation is
- 3
The divisors add up to 5586; without 3722 itself that is 1864, so 3722 is deficient (1864 is less than 3722). Euler's totient φ(3722) = 1860 numbers up to 3722 share no factor with it.
- 4
The digits of 3722 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 38 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3722 = 2 \times 1861 \]
3722 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 5586 |
| Euler totient φ(n) | 1860 |
| Square | 13853284 |
| Cube | 51561923048 |
| Square root | 61.008196 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 38 |
| Scientific notation | 3.722 × |
3722 in other forms
| Form | Value |
|---|---|
| In words | three thousand seven hundred and twenty-two |
| Roman numerals | MMMDCCXXII |
| Binary (base 2) | 111010001010 |
| Octal (base 8) | 7212 |
| Hexadecimal (base 16) | E8A |
| Base 3 | 12002212 |
| As time | 3722 seconds = 1 h 2 min 2 s |
Is 3722 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (3722 ÷ 2 = 1861) | 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 2) | 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 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 5) | 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 | No (remainder 4) | 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 3722 a prime number?
No. 3722 = 2 × 1861, so it is divisible by 2.
What are the factors of 3722?
1, 2, 1861, 3722.
What is 3722 in binary?
111010001010 (hexadecimal E8A, octal 7212).
What is the square root of 3722?
About 61.0082.
What is 3722 in Roman numerals?
MMMDCCXXII.
Is 3722 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 3722?
3722 is a semiprime: 2 × 1861, the product of two primes.