The number 20073
20073 is a composite number with 4 divisors. Its prime factorisation is 3 × 6691. Divisors (4): 1, 3, 6691, 20073.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 20073: a semiprime: 3 × 6691, the product of two primes.
- 2
20073 is composite. Its prime factorisation is
- 3
The divisors add up to 26768; without 20073 itself that is 6695, so 20073 is deficient (6695 is less than 20073). Euler's totient φ(20073) = 13380 numbers up to 20073 share no factor with it.
- 4
The digits of 20073 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 154 steps to reach 1.
LaTeX source of the formulas on this page
\[ 20073 = 3 \times 6691 \]
20073 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 26768 |
| Euler totient φ(n) | 13380 |
| Square | 402925329 |
| Cube | 8087920129017 |
| Square root | 141.679215 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 154 |
| Scientific notation | 2.0073 × |
20073 in other forms
| Form | Value |
|---|---|
| In words | twenty thousand and seventy-three |
| Binary (base 2) | 100111001101001 |
| Octal (base 8) | 47151 |
| Hexadecimal (base 16) | 4E69 |
| Base 3 | 1000112110 |
| As time | 20073 seconds = 5 h 34 min 33 s |
Is 20073 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 | Yes (20073 ÷ 3 = 6691) | 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 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 20073 a prime number?
No. 20073 = 3 × 6691, so it is divisible by 3.
What are the factors of 20073?
1, 3, 6691, 20073.
What is 20073 in binary?
100111001101001 (hexadecimal 4E69, octal 47151).
What is the square root of 20073?
About 141.6792.
Is 20073 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 20073?
20073 is a semiprime: 3 × 6691, the product of two primes.