Hecho general: 28939 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 28939 is an unremarkable number.
Trivia: 28939 is a boring number.
Fecha histórica: March 25th is the day in 1996 that an 81-day-long standoff between the anti-government group Montana Freemen and law enforcement near Jordan, Montana, begins.