John Gill Commentary 2 Chronicles 11:21

"And Rehoboam loved Maacah the daughter of Absalom above all his wives and his concubines: (for he took eighteen wives, and threescore concubines, and begat twenty and eight sons and threescore daughters.)" — 2 Chronicles 11:21 (ASV)

And Rehoboam loved Maacah the daughter of Absalom above all his wives and his concubines , &c] Who is called Michaiah, the daughter of Uriel, (2 Chronicles 13:2) ,

for he took eighteen wives and sixty concubines ; led thereunto by the example of his father Solomon, contrary to the command of God, (Deuteronomy 17:17)

and begat twenty eight sons and sixty daughters ; to have many children was reckoned a great blessing, but it was not honourable to have them in such a way.