728917828 has 6 divisors (see below), whose sum is σ = 1275606206. Its totient is φ = 364458912.

The previous prime is 728917799. The next prime is 728917837. The reversal of 728917828 is 828719827.

728917828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 705858624 + 23059204 = 26568^2 + 4802^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91114725 + ... + 91114732.

Almost surely, 2^728917828 is an apocalyptic number.

It is an amenable number.

728917828 is a deficient number, since it is larger than the sum of its proper divisors (546688378).

728917828 is a wasteful number, since it uses less digits than its factorization.

728917828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182229461 (or 182229459 counting only the distinct ones).

The product of its digits is 903168, while the sum is 52.

The square root of 728917828 is about 26998.4782534127. The cubic root of 728917828 is about 899.9661830915.

The spelling of 728917828 in words is "seven hundred twenty-eight million, nine hundred seventeen thousand, eight hundred twenty-eight".