728578650723 has 24 divisors (see below), whose sum is σ = 1220319066624. Its totient is φ = 378482414640.

The previous prime is 728578650719. The next prime is 728578650773. The reversal of 728578650723 is 327056875827.

It is not a de Polignac number, because 728578650723 - 2² = 728578650719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728578650773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143362011 + ... + 143367092.

It is an arithmetic number, because the mean of its divisors is an integer number (50846627776).

Almost surely, 2^728578650723 is an apocalyptic number.

728578650723 is a deficient number, since it is larger than the sum of its proper divisors (491740415901).

728578650723 is a wasteful number, since it uses less digits than its factorization.

728578650723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286729135 (or 286729124 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 60.

The spelling of 728578650723 in words is "seven hundred twenty-eight billion, five hundred seventy-eight million, six hundred fifty thousand, seven hundred twenty-three".