27131238 has 12 divisors (see below), whose sum is σ = 58784388. Its totient is φ = 9043740.

The previous prime is 27131213. The next prime is 27131239. The reversal of 27131238 is 83213172.

It is a super-2 number, since 2×27131238² = 1472208150825288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27131239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 753628 + ... + 753663.

It is an arithmetic number, because the mean of its divisors is an integer number (4898699).

Almost surely, 2^27131238 is an apocalyptic number.

27131238 is an abundant number, since it is smaller than the sum of its proper divisors (31653150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27131238 is a wasteful number, since it uses less digits than its factorization.

27131238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507299 (or 1507296 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 27131238 is about 5208.7654967372. The cubic root of 27131238 is about 300.4852812504.

The spelling of 27131238 in words is "twenty-seven million, one hundred thirty-one thousand, two hundred thirty-eight".