28076840268 has 12 divisors (see below), whose sum is σ = 65512627320. Its totient is φ = 9358946752.

The previous prime is 28076840257. The next prime is 28076840357. The reversal of 28076840268 is 86204867082.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28076840268.

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, 1169868333 + ... + 1169868356.

It is an arithmetic number, because the mean of its divisors is an integer number (5459385610).

Almost surely, 2^28076840268 is an apocalyptic number.

It is an amenable number.

28076840268 is an abundant number, since it is smaller than the sum of its proper divisors (37435787052).

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

28076840268 is a wasteful number, since it uses less digits than its factorization.

28076840268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339736696 (or 2339736694 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 28076840268 in words is "twenty-eight billion, seventy-six million, eight hundred forty thousand, two hundred sixty-eight".