268806728 has 16 divisors (see below), whose sum is σ = 507397500. Its totient is φ = 133500736.

The previous prime is 268806709. The next prime is 268806731. The reversal of 268806728 is 827608862.

268806728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 217798564 + 51008164 = 14758^2 + 7142^2 .

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, 111563 + ... + 113946.

Almost surely, 2^268806728 is an apocalyptic number.

It is an amenable number.

268806728 is a deficient number, since it is larger than the sum of its proper divisors (238590772).

268806728 is a wasteful number, since it uses less digits than its factorization.

268806728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225664 (or 225660 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 268806728 is about 16395.3264072418. The cubic root of 268806728 is about 645.3768428629.

The spelling of 268806728 in words is "two hundred sixty-eight million, eight hundred six thousand, seven hundred twenty-eight".