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 a boring number.
Data storica: June 28th is the day in 1948 that Boxer Dick Turpin beats Vince Hawkins at Villa Park in Birmingham to become the first black British boxing champion in the modern era.