28193128008 has 32 divisors (see below), whose sum is σ = 70496503200. Its totient is φ = 9395884928.

The previous prime is 28193127997. The next prime is 28193128013. The reversal of 28193128008 is 80082139182.

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, 15163 + ... + 237941.

It is an arithmetic number, because the mean of its divisors is an integer number (2203015725).

Almost surely, 2^28193128008 is an apocalyptic number.

It is an amenable number.

28193128008 is an abundant number, since it is smaller than the sum of its proper divisors (42303375192).

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

28193128008 is a wasteful number, since it uses less digits than its factorization.

28193128008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228061 (or 228057 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 28193128008 in words is "twenty-eight billion, one hundred ninety-three million, one hundred twenty-eight thousand, eight".