72438364 has 6 divisors (see below), whose sum is σ = 126767144. Its totient is φ = 36219180.

The previous prime is 72438347. The next prime is 72438397. The reversal of 72438364 is 46383427.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9054792 + ... + 9054799.

Almost surely, 2^72438364 is an apocalyptic number.

It is an amenable number.

72438364 is a deficient number, since it is larger than the sum of its proper divisors (54328780).

72438364 is a wasteful number, since it uses less digits than its factorization.

72438364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109595 (or 18109593 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 72438364 is about 8511.0730228333. The cubic root of 72438364 is about 416.8593475418.

The spelling of 72438364 in words is "seventy-two million, four hundred thirty-eight thousand, three hundred sixty-four".