12648228 has 48 divisors (see below), whose sum is σ = 30873024. Its totient is φ = 4026240.

The previous prime is 12648173. The next prime is 12648239. The reversal of 12648228 is 82284621.

It is a happy number.

12648228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×12648228⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26851 + ... + 27317.

It is an arithmetic number, because the mean of its divisors is an integer number (643188).

Almost surely, 2^12648228 is an apocalyptic number.

It is an amenable number.

12648228 is an abundant number, since it is smaller than the sum of its proper divisors (18224796).

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

12648228 is a wasteful number, since it uses less digits than its factorization.

12648228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 570 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 12648228 is about 3556.4347315816. The cubic root of 12648228 is about 232.9931905640.

The spelling of 12648228 in words is "twelve million, six hundred forty-eight thousand, two hundred twenty-eight".