Order 648.
73 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C2 | D3×D27 |
| commutator, Fitting, cosocle | C2×C3×C27 | C22 |
| Frattini | C2×C9 | D32 |
| socle | C2×C32 | C2×D9 |
| hypocenter | C3×C27 | D4 |
| LCS | G ▷ C2×C3×C27 ▷ C3×C27 | |
| UCS | C1 ◁ C2 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C2×D3×C27 | C2 | semidirect |
| 2. C2×C3×D27 | C2 | semidirect |
| 3. C3⋊Dic27 | C2 | semidirect |
| 13. C2×D27 | D3 | semidirect |
| 16. C3×C27 | D4 | semidirect |
| 35. C27 | #67 | semidirect |
| 48. C2×D3 | D27 | semidirect |
| 67. C3 | #6171 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×D3×C27 | 2 |
| C2×C3×D27 | 2 |
| C3⋊Dic27 | 2 |
| #6194 | 3 |
| #6171 | 3 |