Order 288.
138 conjugacy classes of subgroups.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 4. Dic9⋊C4 | C2 | direct (N × H) |
| 10. C2×Dic9 | C4 | semidirect |
| 23. Dic9 | C2×C4 | semidirect |
| 32. C2×C9 | C4⋊C4 | semidirect |
| 47. C9 | C2×C4⋊C4 | semidirect |
| 67. C2 | Dic9⋊C4 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C22×C4×C9 | 2 |
| C22×Dic9 | 2 |
| Dic9⋊C4 | 2 |
| C2×Dic3⋊C4 | 3 |