@ShamirR 

To be honest, we cannot give you a precise number that you can connect to the router, the maximum number of concurrent clients which wireless routers can handle is mainly restricted to router hardware and network environment.

Generally, for most of SOHO class routers, the recommended value for the wireless clients is 20~30. However, the specific number depends on the summed up traffic that is generated and the bandwidth given by your ISP. For example, if some clients in your network are doing uTorrent/P2P downloading or playing online games, most of the bandwidth and system resources will be occupied, then only a few clients can enjoy the network; but if all the clients just do ordinary web browsing, or generate extremely little traffic, then the router can handle much more clients simultaneously with good network performance.