Order 1728.
670 conjugacy classes of subgroups.
The subgroup lattice has 224 nodes — too large to display as a diagram.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 28. C3×Q8×C9 | Q8 | semidirect |
| 36. #5570 | C9 | direct (N × H) |
| 84. Q8×C9 | Dic6 | semidirect |
| 139. C3×C9 | #557 | semidirect |
| 142. C3×Q8 | Q8×C9 | semidirect |
| 194. C9 | #5570 | direct (N × H) |
| 196. Q8 | C9×Dic6 | semidirect |
| 218. C3 | C9×#557 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C3×C4×Q8×C9 | 2 |
| Q8×C9×Dic3 | 2 |
| C9×#890 | 2 |
| C9×#869 | 2 |
| C4×C9×Dic6 | 2 |
| C3×#5570 | 3 |
| C9×#557 | 3 |