28 (alƙalami)
 28 | |
|---|---|
positive integer (en)  , perfect number (en) , triangular number (en) , even number (en) , centered nonagonal number (en) , hexagonal number (en) , magic number (en) da composite number (en) | |
 | |
| Bayanai | |
| Mabiyi | 27 |
| Ta biyo baya | 29 |
| Prime factor (en) | biyu da bakwai |