728373872 has 20 divisors (see below), whose sum is σ = 1413126816. Its totient is φ = 363696000.

The previous prime is 728373869. The next prime is 728373883. The reversal of 728373872 is 278373827.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18293 + ... + 42324.

Almost surely, 2^728373872 is an apocalyptic number.

It is an amenable number.

728373872 is a deficient number, since it is larger than the sum of its proper divisors (684752944).

728373872 is a wasteful number, since it uses less digits than its factorization.

728373872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61376 (or 61370 counting only the distinct ones).

The product of its digits is 790272, while the sum is 47.

The square root of 728373872 is about 26988.4025462790. The cubic root of 728373872 is about 899.7422603526.

The spelling of 728373872 in words is "seven hundred twenty-eight million, three hundred seventy-three thousand, eight hundred seventy-two".