723288028 has 6 divisors (see below), whose sum is σ = 1265754056. Its totient is φ = 361644012.

The previous prime is 723288023. The next prime is 723288031. The reversal of 723288028 is 820882327.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723288023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90411000 + ... + 90411007.

Almost surely, 2^723288028 is an apocalyptic number.

It is an amenable number.

723288028 is a deficient number, since it is larger than the sum of its proper divisors (542466028).

723288028 is a wasteful number, since it uses less digits than its factorization.

723288028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180822011 (or 180822009 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 723288028 is about 26894.0147244698. The cubic root of 723288028 is about 897.6432280992.

The spelling of 723288028 in words is "seven hundred twenty-three million, two hundred eighty-eight thousand, twenty-eight".