27213387 has 4 divisors (see below), whose sum is σ = 36284520. Its totient is φ = 18142256.

The previous prime is 27213343. The next prime is 27213409. The reversal of 27213387 is 78331272.

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

It is a cyclic number.

It is not a de Polignac number, because 27213387 - 2¹⁰ = 27212363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27213317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4535562 + ... + 4535567.

It is an arithmetic number, because the mean of its divisors is an integer number (9071130).

Almost surely, 2^27213387 is an apocalyptic number.

27213387 is a deficient number, since it is larger than the sum of its proper divisors (9071133).

27213387 is an equidigital number, since it uses as much as digits as its factorization.

27213387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071132.

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

The square root of 27213387 is about 5216.6451863243. The cubic root of 27213387 is about 300.7882492851.

The spelling of 27213387 in words is "twenty-seven million, two hundred thirteen thousand, three hundred eighty-seven".