Positive Integers » 20001-30000 » 21801-21900 » 21821
Divisors of the Positive Integer 21821
1, 21821Sum of all the Divisors of 21821, including itself
21822Sum of the Proper Divisors of 21821
1Properties of the number 21821
The integer 21821 is an odd number.The integer 21821 is a Prime number.
1 is less than 21821, so 21821 is a deficient number.
The number 21821 as a Roman Numeral
_X_XMDCCCXXI (Roman Numerals with underscores in front have their values increased by 1,000. The underscore represents a line over the numeral, because the Romans used overlines to multiply by 1,000.)The number 21821 in various Numeral Systems
| Base | Representation |
|---|---|
| 2: | 101010100111101 |
| 3: | 1002221012 |
| 4: | 11110331 |
| 5: | 1144241 |
| 6: | 245005 |
| 7: | 120422 |
| 8: | 52475 |
| 9: | 32835 |
| 10: | 21821 |
| 11: | 15438 |
| 12: | 10765 |
| 13: | 9C17 |
| 14: | 7D49 |
| 15: | 66EB |
| 16: | 553D |
| 17: | 478A |
| 18: | 3D65 |
| 19: | 3389 |
| 20: | 2EB1 |
| 21: | 27A2 |
| 22: | 211J |
| 23: | 1I5H |
| 24: | 1DL5 |
| 25: | 19ML |
| 26: | 1677 |
| 27: | 12P5 |
| 28: | RN9 |
| 29: | PRD |
| 30: | O7B |
| 31: | MLS |
| 32: | L9T |
| 33: | K18 |
| 34: | ITR |
| 35: | HSG |
| 36: | GU5 |