28000663108 has 24 divisors (see below), whose sum is σ = 53732800800. Its totient is φ = 12661624320.

The previous prime is 28000663091. The next prime is 28000663129. The reversal of 28000663108 is 80136600082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640158 + ... + 1657141.

It is an arithmetic number, because the mean of its divisors is an integer number (2238866700).

Almost surely, 2^28000663108 is an apocalyptic number.

It is an amenable number.

28000663108 is a deficient number, since it is larger than the sum of its proper divisors (25732137692).

28000663108 is a wasteful number, since it uses less digits than its factorization.

28000663108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297507 (or 3297505 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 28000663108 in words is "twenty-eight billion, six hundred sixty-three thousand, one hundred eight".