27138668 has 6 divisors (see below), whose sum is σ = 47492676. Its totient is φ = 13569332.

The previous prime is 27138667. The next prime is 27138691. The reversal of 27138668 is 86683172.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27138667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3392330 + ... + 3392337.

It is an arithmetic number, because the mean of its divisors is an integer number (7915446).

Almost surely, 2^27138668 is an apocalyptic number.

It is an amenable number.

27138668 is a deficient number, since it is larger than the sum of its proper divisors (20354008).

27138668 is a wasteful number, since it uses less digits than its factorization.

27138668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784671 (or 6784669 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 27138668 is about 5209.4786687345. The cubic root of 27138668 is about 300.5127084528.

The spelling of 27138668 in words is "twenty-seven million, one hundred thirty-eight thousand, six hundred sixty-eight".