728378044 has 24 divisors (see below), whose sum is σ = 1289932448. Its totient is φ = 359838720.

The previous prime is 728378033. The next prime is 728378059. The reversal of 728378044 is 440873827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318184 + ... + 320464.

Almost surely, 2^728378044 is an apocalyptic number.

It is an amenable number.

728378044 is a deficient number, since it is larger than the sum of its proper divisors (561554404).

728378044 is a wasteful number, since it uses less digits than its factorization.

728378044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 728378044 is about 26988.4798386274. The cubic root of 728378044 is about 899.7439782055.

The spelling of 728378044 in words is "seven hundred twenty-eight million, three hundred seventy-eight thousand, forty-four".