27812223 has 6 divisors (see below), whose sum is σ = 40173224. Its totient is φ = 18541476.

The previous prime is 27812209. The next prime is 27812231. The reversal of 27812223 is 32221872.

It is a happy number.

It is not a de Polignac number, because 27812223 - 2¹⁴ = 27795839 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 (27812623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1545115 + ... + 1545132.

Almost surely, 2^27812223 is an apocalyptic number.

27812223 is a deficient number, since it is larger than the sum of its proper divisors (12361001).

27812223 is a wasteful number, since it uses less digits than its factorization.

27812223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090253 (or 3090250 counting only the distinct ones).

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

The square root of 27812223 is about 5273.7295152482. The cubic root of 27812223 is about 302.9785626764.

The spelling of 27812223 in words is "twenty-seven million, eight hundred twelve thousand, two hundred twenty-three".