28179906812 has 12 divisors (see below), whose sum is σ = 50905638336. Its totient is φ = 13635438720.

The previous prime is 28179906803. The next prime is 28179906823. The reversal of 28179906812 is 21860997182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113628533 + ... + 113628780.

It is an arithmetic number, because the mean of its divisors is an integer number (4242136528).

Almost surely, 2^28179906812 is an apocalyptic number.

It is an amenable number.

28179906812 is a deficient number, since it is larger than the sum of its proper divisors (22725731524).

28179906812 is a wasteful number, since it uses less digits than its factorization.

28179906812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227257348 (or 227257346 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 28179906812 in words is "twenty-eight billion, one hundred seventy-nine million, nine hundred six thousand, eight hundred twelve".