72738392 has 8 divisors (see below), whose sum is σ = 136384500. Its totient is φ = 36369192.

The previous prime is 72738389. The next prime is 72738433. The reversal of 72738392 is 29383727.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4546142 + ... + 4546157.

Almost surely, 2^72738392 is an apocalyptic number.

It is an amenable number.

72738392 is a deficient number, since it is larger than the sum of its proper divisors (63646108).

72738392 is a wasteful number, since it uses less digits than its factorization.

72738392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092305 (or 9092301 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 72738392 is about 8528.6805544586. The cubic root of 72738392 is about 417.4340761485.

The spelling of 72738392 in words is "seventy-two million, seven hundred thirty-eight thousand, three hundred ninety-two".