28082117164 has 24 divisors (see below), whose sum is σ = 49843448928. Its totient is φ = 13842326400.

The previous prime is 28082117153. The next prime is 28082117171. The reversal of 28082117164 is 46171128082.

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, 55032 + ... + 243295.

It is an arithmetic number, because the mean of its divisors is an integer number (2076810372).

Almost surely, 2^28082117164 is an apocalyptic number.

It is an amenable number.

28082117164 is a deficient number, since it is larger than the sum of its proper divisors (21761331764).

28082117164 is a wasteful number, since it uses less digits than its factorization.

28082117164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298665 (or 298663 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 28082117164 in words is "twenty-eight billion, eighty-two million, one hundred seventeen thousand, one hundred sixty-four".