72738404 has 12 divisors (see below), whose sum is σ = 127353324. Its totient is φ = 36351744.

The previous prime is 72738389. The next prime is 72738433. The reversal of 72738404 is 40483727.

It can be written as a sum of positive squares in 2 ways, for example, as 42510400 + 30228004 = 6520^2 + 5498^2 .

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 3 ways as a sum of consecutive naturals, for example, 11084 + ... + 16380.

It is an arithmetic number, because the mean of its divisors is an integer number (10612777).

Almost surely, 2^72738404 is an apocalyptic number.

It is an amenable number.

72738404 is a deficient number, since it is larger than the sum of its proper divisors (54614920).

72738404 is a wasteful number, since it uses less digits than its factorization.

72738404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734 (or 8732 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 72738404 is about 8528.6812579671. The cubic root of 72738404 is about 417.4340991039.

The spelling of 72738404 in words is "seventy-two million, seven hundred thirty-eight thousand, four hundred four".