That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims; A people great, and many, and tall, as the Anakims; but the LORD destroyed them before them; and they succeeded them, and dwelt in their stead. Deuteronomy 2:20-21There were a few other groups that God also killed that I don't think I've accounted for yet: the Horim, Avim, and the Caphtorim.
As he did to the children of Esau, which dwelt in Seir, when he destroyed the Horims from before them; and they succeeded them, and dwelt in their stead even unto this day: And the Avims which dwelt in Hazerim, even unto Azzah, the Caphtorims, which came forth out of Caphtor, destroyed them, and dwelt in their stead. Deuteronomy 2:22-23The Bible doesn't say how many were in these groups. So I'll just guess 5,000 for the lot of them.
God's next killing: God hardens King Sihon's heart so he can kill him and all of his people