12423228 has 24 divisors (see below), whose sum is σ = 29605632. Its totient is φ = 4052784.

The previous prime is 12423211. The next prime is 12423233. The reversal of 12423228 is 82232421.

12423228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12423198 and 12423207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450 + ... + 11577.

It is an arithmetic number, because the mean of its divisors is an integer number (1233568).

Almost surely, 2^12423228 is an apocalyptic number.

It is an amenable number.

12423228 is an abundant number, since it is smaller than the sum of its proper divisors (17182404).

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

12423228 is a wasteful number, since it uses less digits than its factorization.

12423228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22081 (or 22079 counting only the distinct ones).

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

The square root of 12423228 is about 3524.6599836013. The cubic root of 12423228 is about 231.6033402354.

Adding to 12423228 its reverse (82232421), we get a palindrome (94655649).

The spelling of 12423228 in words is "twelve million, four hundred twenty-three thousand, two hundred twenty-eight".