20028986164 has 24 divisors (see below), whose sum is σ = 38807864928. Its totient is φ = 8968201440.

The previous prime is 20028986143. The next prime is 20028986179. The reversal of 20028986164 is 46168982002.

It is a congruent number.

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, 3394099 + ... + 3399994.

It is an arithmetic number, because the mean of its divisors is an integer number (1616994372).

Almost surely, 2^20028986164 is an apocalyptic number.

It is an amenable number.

20028986164 is a deficient number, since it is larger than the sum of its proper divisors (18778878764).

20028986164 is a wasteful number, since it uses less digits than its factorization.

20028986164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794175 (or 6794173 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 20028986164 in words is "twenty billion, twenty-eight million, nine hundred eighty-six thousand, one hundred sixty-four".