27018538 has 4 divisors (see below), whose sum is σ = 40527810. Its totient is φ = 13509268.

The previous prime is 27018529. The next prime is 27018557. The reversal of 27018538 is 83581072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 113569 = 5187^2 + 337^2 .

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 as a sum of consecutive naturals, namely, 6754633 + ... + 6754636.

Almost surely, 2^27018538 is an apocalyptic number.

27018538 is a deficient number, since it is larger than the sum of its proper divisors (13509272).

27018538 is a wasteful number, since it uses less digits than its factorization.

27018538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509271.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 27018538 is about 5197.9359365040. The cubic root of 27018538 is about 300.0686435516.

It can be divided in two parts, 27018 and 538, that added together give a square (27556 = 166²).

The spelling of 27018538 in words is "twenty-seven million, eighteen thousand, five hundred thirty-eight".