728003644 has 24 divisors (see below), whose sum is σ = 1294946240. Its totient is φ = 358053696.

The previous prime is 728003641. The next prime is 728003687. The reversal of 728003644 is 446300827.

728003644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728003641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83374 + ... + 91690.

Almost surely, 2^728003644 is an apocalyptic number.

It is an amenable number.

728003644 is a deficient number, since it is larger than the sum of its proper divisors (566942596).

728003644 is a wasteful number, since it uses less digits than its factorization.

728003644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8677 (or 8675 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 728003644 is about 26981.5426541923. The cubic root of 728003644 is about 899.5897900140.

The spelling of 728003644 in words is "seven hundred twenty-eight million, three thousand, six hundred forty-four".