820 in Roman Numerals
820
DCCCXX
eight hundred twenty
How DCCCXX is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 800 | DCCC |
| Tens | 20 | XX |
| Total | 820 | DCCCXX |
DCCCXX is written one place at a time, from the largest to the smallest: DCCC (800) + XX (20) = 820.
Common mistakes
Wrong: CCMXX
Why isn't 820 written as CCMXX?
Only one smaller symbol can stand before a larger one, so CCM doesn't work. 800 is DCCC (500 + 300), so 820 is DCCCXX.
Numbers near 820
Properties of 820
- Prime factors
- 2² × 5 × 41
- Divisors
- 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
- Even or odd
- Even
- Prime number
- No
- Letters in DCCCXX
- 6
820,000 in Roman numerals
With a bar over it (vinculum), D̅C̅C̅C̅X̅X̅ means 820 × 1,000 = 820,000. How Roman numerals work