28026816268 has 12 divisors (see below), whose sum is σ = 53505740232. Its totient is φ = 12739461920.

The previous prime is 28026816263. The next prime is 28026816269. The reversal of 28026816268 is 86261862082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28026816263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318486505 + ... + 318486592.

It is an arithmetic number, because the mean of its divisors is an integer number (4458811686).

Almost surely, 2^28026816268 is an apocalyptic number.

It is an amenable number.

28026816268 is a deficient number, since it is larger than the sum of its proper divisors (25478923964).

28026816268 is a wasteful number, since it uses less digits than its factorization.

28026816268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636973112 (or 636973110 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 28026816268 in words is "twenty-eight billion, twenty-six million, eight hundred sixteen thousand, two hundred sixty-eight".