72388590 has 32 divisors (see below), whose sum is σ = 181287936. Its totient is φ = 18464160.

The previous prime is 72388579. The next prime is 72388643. The reversal of 72388590 is 9588327.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51766 + ... + 53145.

It is an arithmetic number, because the mean of its divisors is an integer number (5665248).

Almost surely, 2^72388590 is an apocalyptic number.

72388590 is an abundant number, since it is smaller than the sum of its proper divisors (108899346).

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

72388590 is a wasteful number, since it uses less digits than its factorization.

72388590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104944.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 72388590 is about 8508.1484472240. The cubic root of 72388590 is about 416.7638479099.

The spelling of 72388590 in words is "seventy-two million, three hundred eighty-eight thousand, five hundred ninety".