Erm, "total number of items" requires either the .item or the .data property, and "size of table" the .size property, doesn't it?

Code:
//hmake x 7 | hadd x a | hadd x b c | echo -ag no prop: $hget(x,0) item: $hget(x,0).item data: $hget(x,0).data size: $hget(x).size | hfree x
returns: "no prop: item: 2 data: 2 size: 7"