20 (number) - Wikipedia
https://en.m.wikipedia.org/wiki/20_(number)
20 is a pronic number. [3] 20 is a tetrahedral number as 1, 4, 10, 20. [4] 20 is the basis for vigesimal number systems. [5] 20 is the third composite number to be the product of a squared prime and a prime, and also the second member of the ( 22) q family in this form. 20 is …
DA: 48 PA: 67 MOZ Rank: 36