Fatto generale: 4622 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4622 is the number of 12-ominoes that contain 1 hole.
Trivia: 4622 is an uninteresting number.
Data storica: August 26th is the day in 1748 that the first Lutheran denomination in North America, the Pennsylvania Ministerium, is founded in Philadelphia, Pennsylvania.