27438293 has 4 divisors (see below), whose sum is σ = 27721260. Its totient is φ = 27155328.

The previous prime is 27438251. The next prime is 27438311. The reversal of 27438293 is 39283472.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6853924 + 20584369 = 2618^2 + 4537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27438293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438233) 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 3 ways as a sum of consecutive naturals, for example, 141338 + ... + 141531.

It is an arithmetic number, because the mean of its divisors is an integer number (6930315).

Almost surely, 2^27438293 is an apocalyptic number.

It is an amenable number.

27438293 is a deficient number, since it is larger than the sum of its proper divisors (282967).

27438293 is an equidigital number, since it uses as much as digits as its factorization.

27438293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282966.

The product of its digits is 72576, while the sum is 38.

The square root of 27438293 is about 5238.1574050423. The cubic root of 27438293 is about 301.6146020190.

The spelling of 27438293 in words is "twenty-seven million, four hundred thirty-eight thousand, two hundred ninety-three".