28385043164 has 12 divisors (see below), whose sum is σ = 49690410000. Its totient is φ = 14187783168.

The previous prime is 28385043163. The next prime is 28385043233. The reversal of 28385043164 is 46134058382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385043163) by changing a digit.

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, 1171109 + ... + 1195100.

It is an arithmetic number, because the mean of its divisors is an integer number (4140867500).

Almost surely, 2^28385043164 is an apocalyptic number.

It is an amenable number.

28385043164 is a deficient number, since it is larger than the sum of its proper divisors (21305366836).

28385043164 is a wasteful number, since it uses less digits than its factorization.

28385043164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369212 (or 2369210 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 28385043164 in words is "twenty-eight billion, three hundred eighty-five million, forty-three thousand, one hundred sixty-four".