Fatto generale: 732 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 732 is 1^{7} + 2^{6} + 3^{5} + 4^{4} + 5^{3} + 6^{2} + 7^{1}.
Trivia: 732 is an unremarkable number.
Data storica: January 1st is the day in 1259 that Michael VIII Palaiologos is proclaimed co-emperor of the Empire of Nicaea with his ward John IV Laskaris.