The number 73994
73994 is a composite number with 4 divisors. Its prime factorisation is 2 × 36997. Divisors (4): 1, 2, 36997, 73994.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 73994: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 36997, the product of two primes.
- 2
73994 is composite. Its prime factorisation is
- 3
The divisors add up to 110994; without 73994 itself that is 37000, so 73994 is deficient (37000 is less than 73994). Euler's totient φ(73994) = 36996 numbers up to 73994 share no factor with it.
- 4
The digits of 73994 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 187 steps to reach 1.
LaTeX source of the formulas on this page
\[ 73994 = 2 \times 36997 \]
73994 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 110994 |
| Euler totient φ(n) | 36996 |
| Square | 5475112036 |
| Cube | 405125439991784 |
| Square root | 272.018382 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 187 |
| Scientific notation | 7.3994 × |
73994 in other forms
| Form | Value |
|---|---|
| In words | seventy-three thousand nine hundred and ninety-four |
| Binary (base 2) | 10010000100001010 |
| Octal (base 8) | 220412 |
| Hexadecimal (base 16) | 1210A |
| Base 3 | 10202111112 |
| As time | 73994 seconds = 20 h 33 min 14 s |
Is 73994 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (73994 ÷ 2 = 36997) | 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 4) | 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 4) | 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 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 73994 a prime number?
No. 73994 = 2 × 36997, so it is divisible by 2.
What are the factors of 73994?
1, 2, 36997, 73994.
What is 73994 in binary?
10010000100001010 (hexadecimal 1210A, octal 220412).
What is the square root of 73994?
About 272.0184.
Is 73994 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 73994?
73994 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 36997, the product of two primes.