27487138 has 24 divisors (see below), whose sum is σ = 49139244. Its totient is φ = 11491200.

The previous prime is 27487121. The next prime is 27487171. The reversal of 27487138 is 83178472.

It can be written as a sum of positive squares in 2 ways, for example, as 26904969 + 582169 = 5187^2 + 763^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27487138.

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 in 11 ways as a sum of consecutive naturals, for example, 598 + ... + 7438.

Almost surely, 2^27487138 is an apocalyptic number.

27487138 is a deficient number, since it is larger than the sum of its proper divisors (21652106).

27487138 is a wasteful number, since it uses less digits than its factorization.

27487138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898 (or 6891 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 27487138 is about 5242.8177538419. The cubic root of 27487138 is about 301.7934716472.

The spelling of 27487138 in words is "twenty-seven million, four hundred eighty-seven thousand, one hundred thirty-eight".