Fatto matematico: 28954 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 28954 is an uninteresting number.
Data storica: April 9th is the day in 1981 that the U.S. Navy nuclear submarine USS George Washington (SSBN-598) accidentally collides with the Nissho Maru, a Japanese cargo ship, sinking it.