12243228 has 12 divisors (see below), whose sum is σ = 28567560. Its totient is φ = 4081072.

The previous prime is 12243227. The next prime is 12243229. The reversal of 12243228 is 82234221.

12243228 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12243227) and next prime (12243229).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12243198 and 12243207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243221) 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, 510123 + ... + 510146.

It is an arithmetic number, because the mean of its divisors is an integer number (2380630).

Almost surely, 2^12243228 is an apocalyptic number.

It is an amenable number.

12243228 is an abundant number, since it is smaller than the sum of its proper divisors (16324332).

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

12243228 is a wasteful number, since it uses less digits than its factorization.

12243228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020276 (or 1020274 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 12243228 is about 3499.0324376890. The cubic root of 12243228 is about 230.4793280320.

Adding to 12243228 its reverse (82234221), we get a palindrome (94477449).

The spelling of 12243228 in words is "twelve million, two hundred forty-three thousand, two hundred twenty-eight".