27827378228 has 24 divisors (see below), whose sum is σ = 52456720680. Its totient is φ = 12840266880.

The previous prime is 27827378203. The next prime is 27827378231. The reversal of 27827378228 is 82287372872.

It can be written as a sum of positive squares in 4 ways, for example, as 15802501264 + 12024876964 = 125708^2 + 109658^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156638 + ... + 283178.

It is an arithmetic number, because the mean of its divisors is an integer number (2185696695).

Almost surely, 2^27827378228 is an apocalyptic number.

It is an amenable number.

27827378228 is a deficient number, since it is larger than the sum of its proper divisors (24629342452).

27827378228 is a wasteful number, since it uses less digits than its factorization.

27827378228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130787 (or 130785 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 56.

The spelling of 27827378228 in words is "twenty-seven billion, eight hundred twenty-seven million, three hundred seventy-eight thousand, two hundred twenty-eight".