27147213 has 12 divisors (see below), whose sum is σ = 39573820. Its totient is φ = 17931456.

The previous prime is 27147209. The next prime is 27147217. The reversal of 27147213 is 31274172.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27147209) and next prime (27147217).

It can be written as a sum of positive squares in 2 ways, for example, as 7193124 + 19954089 = 2682^2 + 4467^2 .

It is not a de Polignac number, because 27147213 - 2² = 27147209 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 (27147217) 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, 12856 + ... + 14817.

Almost surely, 2^27147213 is an apocalyptic number.

It is an amenable number.

27147213 is a deficient number, since it is larger than the sum of its proper divisors (12426607).

27147213 is a wasteful number, since it uses less digits than its factorization.

27147213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27788 (or 27785 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 27147213 is about 5210.2987438342. The cubic root of 27147213 is about 300.5442453928.

The spelling of 27147213 in words is "twenty-seven million, one hundred forty-seven thousand, two hundred thirteen".