Mathematical fact: 8152 is the number of symmetric arrangements of 8 non-attacking queens on a 8×8 chessboard.
Trivia: 8152 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: April 26th is the day in 1965 that a Rolling Stones concert in London, Ontario is shut down by police after 15 minutes due to rioting.