28576648028 has 6 divisors (see below), whose sum is σ = 50009134056. Its totient is φ = 14288324012.

The previous prime is 28576648013. The next prime is 28576648063. The reversal of 28576648028 is 82084667582.

It is a happy number.

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, 3572081000 + ... + 3572081007.

It is an arithmetic number, because the mean of its divisors is an integer number (8334855676).

Almost surely, 2^28576648028 is an apocalyptic number.

It is an amenable number.

28576648028 is a deficient number, since it is larger than the sum of its proper divisors (21432486028).

28576648028 is a wasteful number, since it uses less digits than its factorization.

28576648028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144162011 (or 7144162009 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 28576648028 in words is "twenty-eight billion, five hundred seventy-six million, six hundred forty-eight thousand, twenty-eight".