12224028 has 12 divisors (see below), whose sum is σ = 28522760. Its totient is φ = 4074672.

The previous prime is 12224021. The next prime is 12224029. The reversal of 12224028 is 82042221.

It is a happy number.

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 = 12223995 and 12224013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 509323 + ... + 509346.

Almost surely, 2^12224028 is an apocalyptic number.

It is an amenable number.

12224028 is an abundant number, since it is smaller than the sum of its proper divisors (16298732).

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

12224028 is a wasteful number, since it uses less digits than its factorization.

12224028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018676 (or 1018674 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 12224028 is about 3496.2877455953. The cubic root of 12224028 is about 230.3587847042.

Adding to 12224028 its reverse (82042221), we get a palindrome (94266249).

The spelling of 12224028 in words is "twelve million, two hundred twenty-four thousand, twenty-eight".