Fatto generale: 83820 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 83820 is an unremarkable number.
Trivia: 83820 is an unremarkable number.
Data storica: June 28th is the day in 1978 that the United States Supreme Court, in Regents of the University of California v. Bakke bars quota systems in college admissions.