12228672 has 28 divisors (see below), whose sum is σ = 32355536. Its totient is φ = 4076160.

The previous prime is 12228653. The next prime is 12228677. The reversal of 12228672 is 27682221.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12228677) 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, 31654 + ... + 32037.

Almost surely, 2^12228672 is an apocalyptic number.

12228672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12228672 is an abundant number, since it is smaller than the sum of its proper divisors (20126864).

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

12228672 is an equidigital number, since it uses as much as digits as its factorization.

12228672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63706 (or 63696 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 12228672 is about 3496.9518155102. The cubic root of 12228672 is about 230.3879526880.

The spelling of 12228672 in words is "twelve million, two hundred twenty-eight thousand, six hundred seventy-two".