28895215309808 has 10 divisors (see below), whose sum is σ = 55984479662784. Its totient is φ = 14447607654896.

The previous prime is 28895215309789. The next prime is 28895215309811. The reversal of 28895215309808 is 80890351259882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902975478416 + ... + 902975478447.

Almost surely, 2^{28895215309808} is an apocalyptic number.

It is an amenable number.

28895215309808 is a deficient number, since it is larger than the sum of its proper divisors (27089264352976).

28895215309808 is a wasteful number, since it uses less digits than its factorization.

28895215309808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805950956871 (or 1805950956865 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 68.

The spelling of 28895215309808 in words is "twenty-eight trillion, eight hundred ninety-five billion, two hundred fifteen million, three hundred nine thousand, eight hundred eight".