twenty and four thousand. This includes the 1,000 previously "hanged" (verses:Numbers 25:4; Numbers 25:4; Numbers 25:5), as well as those who died of the "plague". These must have been 23,000 of 1 Corinthians 10:8, which "fell in one day".
Related Commentaries of Numbers 25:9
Numbers 25:9
9 And those that died in the plague were twenty and four thousand.