Order 360.
48 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center | C2×C5 | C2×D9 |
| commutator, cosocle | C2×C9 | C22×C5 |
| Frattini | C2×C3 | C2×C5×D3 |
| Fitting | C22×C5×C9 | C2 |
| socle | C2×C3×C5 | C2×D3 |
| hypercenter | C22×C5 | D9 |
| hypocenter | C9 | C5×D4 |
| LCS | G ▷ C2×C9 ▷ C9 | |
| UCS | C1 ◁ C2×C5 ◁ C22×C5 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C22×C5×C9 | C2 | semidirect |
| 2. C2×C5×D9 | C2 | semidirect |
| 3. C5×Dic9 | C2 | semidirect |
| 8. #611 | C5 | direct (N × H) |
| 12. C5×C9 | D4 | semidirect |
| 14. C22×C9 | C2×C5 | semidirect |
| 15. C2×D9 | C2×C5 | semidirect |
| 16. Dic9 | C2×C5 | semidirect |
| 22. C22×C5 | D9 | semidirect |
| 34. C9 | C5×D4 | semidirect |
| 39. C5 | #611 | direct (N × H) |
| 41. C22 | C5×D9 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C22×C5×C9 | 2 |
| C2×C5×D9 | 2 |
| C5×Dic9 | 2 |
| C5×#67 | 3 |
| #611 | 5 |