728667268704 has 72 divisors (see below), whose sum is σ = 2194038592200. Its totient is φ = 228601494528.

The previous prime is 728667268697. The next prime is 728667268733. The reversal of 728667268704 is 407862766827.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74409654 + ... + 74419445.

It is an arithmetic number, because the mean of its divisors is an integer number (30472758225).

Almost surely, 2^728667268704 is an apocalyptic number.

It is an amenable number.

728667268704 is an abundant number, since it is smaller than the sum of its proper divisors (1465371323496).

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

728667268704 is a wasteful number, since it uses less digits than its factorization.

728667268704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148829132 (or 148829121 counting only the distinct ones).

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

The spelling of 728667268704 in words is "seven hundred twenty-eight billion, six hundred sixty-seven million, two hundred sixty-eight thousand, seven hundred four".