28086138550204 has 12 divisors (see below), whose sum is σ = 56172277100464. Its totient is φ = 12036916521504.

The previous prime is 28086138550193. The next prime is 28086138550213. The reversal of 28086138550204 is 40205583168082.

28086138550204 is an admirable number.

It is a super-2 number, since 2×28086138550204² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501538188369 + ... + 501538188424.

Almost surely, 2^{28086138550204} is an apocalyptic number.

It is an amenable number.

28086138550204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28086138550204 is a wasteful number, since it uses less digits than its factorization.

28086138550204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003076376804 (or 1003076376802 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 28086138550204 in words is "twenty-eight trillion, eighty-six billion, one hundred thirty-eight million, five hundred fifty thousand, two hundred four".