74 (number)
74 is the natural number following 73 and preceding 75.
In mathematics
74 is:- the twenty-first distinct semiprime and the eleventh of the form, where q is a higher prime.
- with an aliquot sum of 40, within an aliquot sequence of three composite numbers to the Prime in the 43-aliquot tree.
- a palindromic number in bases 6 and 36.
- a nontotient.
- the number of collections of subsets of that are closed under union and intersection.
- φ = φ.