27812164 has 12 divisors (see below), whose sum is σ = 48811644. Its totient is φ = 13865984.

The previous prime is 27812117. The next prime is 27812167. The reversal of 27812164 is 46121872.

It can be written as a sum of positive squares in 2 ways, for example, as 7182400 + 20629764 = 2680^2 + 4542^2 .

It is not an unprimeable number, because it can be changed into a prime (27812167) 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, 8437 + ... + 11260.

It is an arithmetic number, because the mean of its divisors is an integer number (4067637).

Almost surely, 2^27812164 is an apocalyptic number.

It is an amenable number.

27812164 is a deficient number, since it is larger than the sum of its proper divisors (20999480).

27812164 is a wasteful number, since it uses less digits than its factorization.

27812164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20054 (or 20052 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 27812164 is about 5273.7239214809. The cubic root of 27812164 is about 302.9783484331.

The spelling of 27812164 in words is "twenty-seven million, eight hundred twelve thousand, one hundred sixty-four".