Perfect Number Day

Frequency:
Every
Jun 28
Inception Year:
2009
Hashtags:
References:
mathnexus.wwu.edu/archive/humor/detail.asp?ID=212
medium.com/…/celebrate-the-math-holiday-of-perfect-number-day-ev…
x.com/Forbes/status/1012430690527440897

Perfect Number Day happens each year on the 28th of June.

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