27797213 has 4 divisors (see below), whose sum is σ = 27811200. Its totient is φ = 27783228.

The previous prime is 27797191. The next prime is 27797219. The reversal of 27797213 is 31279772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27797213 - 2⁶ = 27797149 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 (27797219) 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 3 ways as a sum of consecutive naturals, for example, 3395 + ... + 8192.

It is an arithmetic number, because the mean of its divisors is an integer number (6952800).

Almost surely, 2^27797213 is an apocalyptic number.

It is an amenable number.

27797213 is a deficient number, since it is larger than the sum of its proper divisors (13987).

27797213 is a wasteful number, since it uses less digits than its factorization.

27797213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13986.

The product of its digits is 37044, while the sum is 38.

The square root of 27797213 is about 5272.3062316220. The cubic root of 27797213 is about 302.9240479571.

The spelling of 27797213 in words is "twenty-seven million, seven hundred ninety-seven thousand, two hundred thirteen".