27813868 has 12 divisors (see below), whose sum is σ = 48750912. Its totient is φ = 13885040.

The previous prime is 27813859. The next prime is 27813917. The reversal of 27813868 is 86831872.

It is a happy number.

It is a super-2 number, since 2×27813868² = 1547222506242848, which contains 22 as substring.

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, 2428 + ... + 7843.

It is an arithmetic number, because the mean of its divisors is an integer number (4062576).

Almost surely, 2^27813868 is an apocalyptic number.

It is an amenable number.

27813868 is a deficient number, since it is larger than the sum of its proper divisors (20937044).

27813868 is a wasteful number, since it uses less digits than its factorization.

27813868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10952 (or 10950 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 27813868 is about 5273.8854746761. The cubic root of 27813868 is about 302.9845359483.

The spelling of 27813868 in words is "twenty-seven million, eight hundred thirteen thousand, eight hundred sixty-eight".