Order 1728.
622 conjugacy classes of subgroups.
The subgroup lattice has 320 nodes — too large to display as a diagram.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 33. C2×C3×C4×C9 | Q8 | semidirect |
| 41. C2×C9×Dic3 | Q8 | semidirect |
| 44. #4656 | C9 | direct (N × H) |
| 120. C2×C4×C9 | Dic6 | semidirect |
| 180. C3×C9 | #395 | semidirect |
| 205. C2×C3×C4 | Q8×C9 | semidirect |
| 215. C2×Dic3 | Q8×C9 | semidirect |
| 270. C9 | #4656 | direct (N × H) |
| 284. C2×C4 | C9×Dic6 | semidirect |
| 312. C3 | C9×#395 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C22×C9×Dic6 | 2 |
| C2×C9×C4⋊Dic3 | 2 |
| C2×C9×Dic3⋊C4 | 2 |
| C3×C9×#95 | 2 |
| C9×C3⋊#95 | 2 |
| C3×#4656 | 3 |
| C9×#395 | 3 |