72306774 has 24 divisors (see below), whose sum is σ = 159999840. Its totient is φ = 23589168.

The previous prime is 72306743. The next prime is 72306781. The reversal of 72306774 is 47760327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41889 + ... + 43580.

It is an arithmetic number, because the mean of its divisors is an integer number (6666660).

Almost surely, 2^72306774 is an apocalyptic number.

72306774 is an abundant number, since it is smaller than the sum of its proper divisors (87693066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72306774 is a wasteful number, since it uses less digits than its factorization.

72306774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85524 (or 85521 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 72306774 is about 8503.3389912434. The cubic root of 72306774 is about 416.6067752494.

The spelling of 72306774 in words is "seventy-two million, three hundred six thousand, seven hundred seventy-four".