728667268672 has 28 divisors (see below), whose sum is σ = 1652513271040. Its totient is φ = 312285972096.

The previous prime is 728667268669. The next prime is 728667268697. The reversal of 728667268672 is 276862766827.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 728667268598 and 728667268607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813244272 + ... + 813245167.

Almost surely, 2^728667268672 is an apocalyptic number.

It is an amenable number.

728667268672 is an abundant number, since it is smaller than the sum of its proper divisors (923846002368).

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

728667268672 is a wasteful number, since it uses less digits than its factorization.

728667268672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626489458 (or 1626489448 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 67.

The spelling of 728667268672 in words is "seven hundred twenty-eight billion, six hundred sixty-seven million, two hundred sixty-eight thousand, six hundred seventy-two".