728578715732 has 96 divisors (see below), whose sum is σ = 1482030950400. Its totient is φ = 306970335360.

The previous prime is 728578715723. The next prime is 728578715737. The reversal of 728578715732 is 237517875827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728578715737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324822203 + ... + 324824445.

It is an arithmetic number, because the mean of its divisors is an integer number (15437822400).

Almost surely, 2^728578715732 is an apocalyptic number.

It is an amenable number.

728578715732 is an abundant number, since it is smaller than the sum of its proper divisors (753452234668).

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

728578715732 is a wasteful number, since it uses less digits than its factorization.

728578715732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141 (or 3139 counting only the distinct ones).

The product of its digits is 46099200, while the sum is 62.

The spelling of 728578715732 in words is "seven hundred twenty-eight billion, five hundred seventy-eight million, seven hundred fifteen thousand, seven hundred thirty-two".