12228664 has 32 divisors (see below), whose sum is σ = 26409600. Its totient is φ = 5199840.

The previous prime is 12228653. The next prime is 12228677. The reversal of 12228664 is 46682221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6999 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (825300).

Almost surely, 2^12228664 is an apocalyptic number.

12228664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12228664 is an abundant number, since it is smaller than the sum of its proper divisors (14180936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12228664 is a wasteful number, since it uses less digits than its factorization.

12228664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1719 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 12228664 is about 3496.9506716567. The cubic root of 12228664 is about 230.3879024480.

The spelling of 12228664 in words is "twelve million, two hundred twenty-eight thousand, six hundred sixty-four".