27138788 has 6 divisors (see below), whose sum is σ = 47492886. Its totient is φ = 13569392.

The previous prime is 27138773. The next prime is 27138799. The reversal of 27138788 is 88783172.

It can be written as a sum of positive squares in only one way, i.e., 25989604 + 1149184 = 5098^2 + 1072^2 .

It is an unprimeable number.

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, 3392345 + ... + 3392352.

It is an arithmetic number, because the mean of its divisors is an integer number (7915481).

Almost surely, 2^27138788 is an apocalyptic number.

It is an amenable number.

27138788 is a deficient number, since it is larger than the sum of its proper divisors (20354098).

27138788 is a wasteful number, since it uses less digits than its factorization.

27138788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784701 (or 6784699 counting only the distinct ones).

The product of its digits is 150528, while the sum is 44.

The square root of 27138788 is about 5209.4901861890. The cubic root of 27138788 is about 300.5131513814.

The spelling of 27138788 in words is "twenty-seven million, one hundred thirty-eight thousand, seven hundred eighty-eight".