27744231 has 16 divisors (see below), whose sum is σ = 37958144. Its totient is φ = 18019584.

The previous prime is 27744217. The next prime is 27744251. The reversal of 27744231 is 13244772.

It is not a de Polignac number, because 27744231 - 2⁹ = 27743719 is a prime.

It is a super-2 number, since 2×27744231² = 1539484707562722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27744251) 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 15 ways as a sum of consecutive naturals, for example, 18786 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (2372384).

Almost surely, 2^27744231 is an apocalyptic number.

27744231 is a deficient number, since it is larger than the sum of its proper divisors (10213913).

27744231 is a wasteful number, since it uses less digits than its factorization.

27744231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its digits is 9408, while the sum is 30.

The square root of 27744231 is about 5267.2792787169. The cubic root of 27744231 is about 302.7314659452.

The spelling of 27744231 in words is "twenty-seven million, seven hundred forty-four thousand, two hundred thirty-one".