27389331 has 12 divisors (see below), whose sum is σ = 39620880. Its totient is φ = 18232560.

The previous prime is 27389309. The next prime is 27389333. The reversal of 27389331 is 13398372.

It is a happy number.

It is not a de Polignac number, because 27389331 - 2⁶ = 27389267 is a prime.

It is a super-2 number, since 2×27389331² = 1500350905255122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27389333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5626 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (3301740).

Almost surely, 2^27389331 is an apocalyptic number.

27389331 is a deficient number, since it is larger than the sum of its proper divisors (12231549).

27389331 is a wasteful number, since it uses less digits than its factorization.

27389331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4503 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 27389331 is about 5233.4817282570. The cubic root of 27389331 is about 301.4350907685.

The spelling of 27389331 in words is "twenty-seven million, three hundred eighty-nine thousand, three hundred thirty-one".