I have done a cluster for markers in google maps. And works fine, but, now I want to put the number of markers that have been clusterized in the marker that has all of them. But I don't know how to do it. It's possible? I though in have diferrent icons with the numbers.. but I thing is not good idea, for the many icons that can be needed...
I did some images to show what I want (the result is made by hand)