28385104266 has 40 divisors (see below), whose sum is σ = 64104522240. Its totient is φ = 9387193032.

The previous prime is 28385104193. The next prime is 28385104327. The reversal of 28385104266 is 66240158382.

28385104266 is a `hidden beast` number, since 2 + 8 + 38 + 510 + 42 + 66 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 669256 + ... + 710403.

It is an arithmetic number, because the mean of its divisors is an integer number (1602613056).

Almost surely, 2^28385104266 is an apocalyptic number.

28385104266 is an abundant number, since it is smaller than the sum of its proper divisors (35719417974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28385104266 is a wasteful number, since it uses less digits than its factorization.

28385104266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379800 (or 1379791 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

It can be divided in two parts, 28385 and 104266, that added together give a cube (132651 = 51³).

The spelling of 28385104266 in words is "twenty-eight billion, three hundred eighty-five million, one hundred four thousand, two hundred sixty-six".