728228604 has 12 divisors (see below), whose sum is σ = 1699200104. Its totient is φ = 242742864.

The previous prime is 728228603. The next prime is 728228623. The reversal of 728228604 is 406822827.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728228603) 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 in 3 ways as a sum of consecutive naturals, for example, 30342847 + ... + 30342870.

Almost surely, 2^728228604 is an apocalyptic number.

It is an amenable number.

728228604 is an abundant number, since it is smaller than the sum of its proper divisors (970971500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728228604 is a wasteful number, since it uses less digits than its factorization.

728228604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60685724 (or 60685722 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 728228604 is about 26985.7111079178. The cubic root of 728228604 is about 899.6824410511.

The spelling of 728228604 in words is "seven hundred twenty-eight million, two hundred twenty-eight thousand, six hundred four".