Order 672.
56 conjugacy classes of subgroups.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C3×D56 | C2 | semidirect |
| 2. C3×C7×C16 | C2 | semidirect |
| 3. D112 | C3 | direct (N × H) |
| 6. D56 | C2×C3 | semidirect |
| 7. C7×C16 | C2×C3 | semidirect |
| 14. C3×C16 | D7 | semidirect |
| 22. C3×C7 | D16 | semidirect |
| 24. C16 | C3×D7 | semidirect |
| 31. C7 | C3×D16 | semidirect |
| 36. C3 | D112 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C3×D56 | 2 |
| C3×C7×C16 | 2 |
| D112 | 3 |
| C3×D16 | 7 |