Fatto matematico: 2671 is a value of n for which 2n and 7n together use the digits 1-9 exactly once.
Trivia: 2671 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: April 24th is the day in 1704 that the first regular newspaper in the United States, the News-Letter, is published in Boston, Massachusetts.