28108253192856 has 16 divisors (see below), whose sum is σ = 70270632982200. Its totient is φ = 9369417730944.

The previous prime is 28108253192849. The next prime is 28108253192881. The reversal of 28108253192856 is 65829135280182.

It is a self number, because there is not a number n which added to its sum of digits gives 28108253192856.

It is a congruent number.

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, 585588608161 + ... + 585588608208.

Almost surely, 2^{28108253192856} is an apocalyptic number.

It is an amenable number.

28108253192856 is an abundant number, since it is smaller than the sum of its proper divisors (42162379789344).

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

28108253192856 is a wasteful number, since it uses less digits than its factorization.

28108253192856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171177216378 (or 1171177216374 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 60.

The spelling of 28108253192856 in words is "twenty-eight trillion, one hundred eight billion, two hundred fifty-three million, one hundred ninety-two thousand, eight hundred fifty-six".