27887089236 has 12 divisors (see below), whose sum is σ = 65069874912. Its totient is φ = 9295696408.

The previous prime is 27887089229. The next prime is 27887089253. The reversal of 27887089236 is 63298078872.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 27887089236.

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, 1161962040 + ... + 1161962063.

It is an arithmetic number, because the mean of its divisors is an integer number (5422489576).

Almost surely, 2^27887089236 is an apocalyptic number.

It is an amenable number.

27887089236 is an abundant number, since it is smaller than the sum of its proper divisors (37182785676).

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

27887089236 is a wasteful number, since it uses less digits than its factorization.

27887089236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323924110 (or 2323924108 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 27887089236 in words is "twenty-seven billion, eight hundred eighty-seven million, eighty-nine thousand, two hundred thirty-six".