27869868 has 144 divisors (see below), whose sum is σ = 83655936. Its totient is φ = 7741440.

The previous prime is 27869819. The next prime is 27869887. The reversal of 27869868 is 86896872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246580 + ... + 246692.

It is an arithmetic number, because the mean of its divisors is an integer number (580944).

Almost surely, 2^27869868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27869868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41827968).

27869868 is an abundant number, since it is smaller than the sum of its proper divisors (55786068).

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

27869868 is a wasteful number, since it uses less digits than its factorization.

27869868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 179 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 27869868 is about 5279.1919836278. The cubic root of 27869868 is about 303.1877410498.

The spelling of 27869868 in words is "twenty-seven million, eight hundred sixty-nine thousand, eight hundred sixty-eight".