72723888 has 30 divisors (see below), whose sum is σ = 203526284. Its totient is φ = 24241248.

The previous prime is 72723869. The next prime is 72723901. The reversal of 72723888 is 88832727.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252370 + ... + 252657.

Almost surely, 2^72723888 is an apocalyptic number.

It is an amenable number.

72723888 is an abundant number, since it is smaller than the sum of its proper divisors (130802396).

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

72723888 is a wasteful number, since it uses less digits than its factorization.

72723888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505041 (or 505032 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 72723888 is about 8527.8302046886. The cubic root of 72723888 is about 417.4063289202.

The spelling of 72723888 in words is "seventy-two million, seven hundred twenty-three thousand, eight hundred eighty-eight".