27938529 has 12 divisors (see below), whose sum is σ = 40410916. Its totient is φ = 18600192.

The previous prime is 27938527. The next prime is 27938567. The reversal of 27938529 is 92583972.

It can be written as a sum of positive squares in 2 ways, for example, as 13307904 + 14630625 = 3648^2 + 3825^2 .

It is not a de Polignac number, because 27938529 - 2¹ = 27938527 is a prime.

It is a super-2 number, since 2×27938529² = 1561122805367682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27938527) 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 in 11 ways as a sum of consecutive naturals, for example, 6777 + ... + 10089.

Almost surely, 2^27938529 is an apocalyptic number.

It is an amenable number.

27938529 is a deficient number, since it is larger than the sum of its proper divisors (12472387).

27938529 is a wasteful number, since it uses less digits than its factorization.

27938529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256 (or 4253 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 27938529 is about 5285.6909671300. The cubic root of 27938529 is about 303.4365175132.

The spelling of 27938529 in words is "twenty-seven million, nine hundred thirty-eight thousand, five hundred twenty-nine".