728565798 has 16 divisors (see below), whose sum is σ = 1457407296. Its totient is φ = 242809320.

The previous prime is 728565797. The next prime is 728565857. The reversal of 728565798 is 897565827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728565793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42093 + ... + 56823.

It is an arithmetic number, because the mean of its divisors is an integer number (91087956).

Almost surely, 2^728565798 is an apocalyptic number.

728565798 is an abundant number, since it is smaller than the sum of its proper divisors (728841498).

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

728565798 is a wasteful number, since it uses less digits than its factorization.

728565798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22979.

The product of its digits is 8467200, while the sum is 57.

The square root of 728565798 is about 26991.9580245672. The cubic root of 728565798 is about 899.8212805621.

The spelling of 728565798 in words is "seven hundred twenty-eight million, five hundred sixty-five thousand, seven hundred ninety-eight".