28076665804 has 12 divisors (see below), whose sum is σ = 53600907528. Its totient is φ = 12762120800.

The previous prime is 28076665753. The next prime is 28076665817. The reversal of 28076665804 is 40856667082.

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, 319052977 + ... + 319053064.

It is an arithmetic number, because the mean of its divisors is an integer number (4466742294).

Almost surely, 2^28076665804 is an apocalyptic number.

It is an amenable number.

28076665804 is a deficient number, since it is larger than the sum of its proper divisors (25524241724).

28076665804 is a wasteful number, since it uses less digits than its factorization.

28076665804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638106056 (or 638106054 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 28076665804 in words is "twenty-eight billion, seventy-six million, six hundred sixty-five thousand, eight hundred four".