728734616784 has 60 divisors (see below), whose sum is σ = 2114979799296. Its totient is φ = 242911537632.

The previous prime is 728734616783. The next prime is 728734616849. The reversal of 728734616784 is 487616437827.

728734616784 is a `hidden beast` number, since 7 + 2 + 8 + 7 + 3 + 4 + 616 + 7 + 8 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728734616783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93711984 + ... + 93719759.

Almost surely, 2^728734616784 is an apocalyptic number.

It is an amenable number.

728734616784 is an abundant number, since it is smaller than the sum of its proper divisors (1386245182512).

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

728734616784 is a wasteful number, since it uses less digits than its factorization.

728734616784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187431766 (or 187431748 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The spelling of 728734616784 in words is "seven hundred twenty-eight billion, seven hundred thirty-four million, six hundred sixteen thousand, seven hundred eighty-four".