27387213 has 16 divisors (see below), whose sum is σ = 41817216. Its totient is φ = 15618240.

The previous prime is 27387211. The next prime is 27387247. The reversal of 27387213 is 31278372.

It is not a de Polignac number, because 27387213 - 2¹ = 27387211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27387211) 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, 12895 + ... + 14867.

It is an arithmetic number, because the mean of its divisors is an integer number (2613576).

Almost surely, 2^27387213 is an apocalyptic number.

It is an amenable number.

27387213 is a deficient number, since it is larger than the sum of its proper divisors (14430003).

27387213 is a wasteful number, since it uses less digits than its factorization.

27387213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644.

The product of its digits is 14112, while the sum is 33.

The square root of 27387213 is about 5233.2793733949. The cubic root of 27387213 is about 301.4273206386.

The spelling of 27387213 in words is "twenty-seven million, three hundred eighty-seven thousand, two hundred thirteen".