Fatto generale: 28393 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 28393 is an unremarkable number.
Trivia: 28393 is an uninteresting number.
Data storica: September 25th is the day in 1957 that Central High School in Little Rock, Arkansas, is integrated by the use of United States Army troops.