728458928 has 10 divisors (see below), whose sum is σ = 1411389204. Its totient is φ = 364229456.

The previous prime is 728458903. The next prime is 728458933. The reversal of 728458928 is 829854827.

It is a self number, because there is not a number n which added to its sum of digits gives 728458928.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22764326 + ... + 22764357.

Almost surely, 2^728458928 is an apocalyptic number.

It is an amenable number.

728458928 is a deficient number, since it is larger than the sum of its proper divisors (682930276).

728458928 is a wasteful number, since it uses less digits than its factorization.

728458928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45528691 (or 45528685 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The square root of 728458928 is about 26989.9782882462. The cubic root of 728458928 is about 899.7772815150. Note that the first 3 decimals are identical.

The spelling of 728458928 in words is "seven hundred twenty-eight million, four hundred fifty-eight thousand, nine hundred twenty-eight".