27038421 has 16 divisors (see below), whose sum is σ = 40137600. Its totient is φ = 17989344.

The previous prime is 27038399. The next prime is 27038441. The reversal of 27038421 is 12483072.

It is not a de Polignac number, because 27038421 - 2¹⁵ = 27005653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27038441) 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 15 ways as a sum of consecutive naturals, for example, 23385 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (2508600).

Almost surely, 2^27038421 is an apocalyptic number.

It is an amenable number.

27038421 is a deficient number, since it is larger than the sum of its proper divisors (13099179).

27038421 is a wasteful number, since it uses less digits than its factorization.

27038421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 27038421 is about 5199.8481708604. The cubic root of 27038421 is about 300.1422325557.

The spelling of 27038421 in words is "twenty-seven million, thirty-eight thousand, four hundred twenty-one".