27243438 has 8 divisors (see below), whose sum is σ = 54486888. Its totient is φ = 9081144.

The previous prime is 27243413. The next prime is 27243439. The reversal of 27243438 is 83434272.

It is a sphenic number, since it is the product of 3 distinct primes.

27243438 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27243399 and 27243408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27243439) 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 3 ways as a sum of consecutive naturals, for example, 2270281 + ... + 2270292.

It is an arithmetic number, because the mean of its divisors is an integer number (6810861).

Almost surely, 2^27243438 is an apocalyptic number.

27243438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27243438 is a wasteful number, since it uses less digits than its factorization.

27243438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540578.

The product of its digits is 32256, while the sum is 33.

The square root of 27243438 is about 5219.5246910040. The cubic root of 27243438 is about 300.8989259722.

The spelling of 27243438 in words is "twenty-seven million, two hundred forty-three thousand, four hundred thirty-eight".