12442228 has 12 divisors (see below), whose sum is σ = 21831012. Its totient is φ = 6204800.

The previous prime is 12442223. The next prime is 12442237. The reversal of 12442228 is 82224421.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 868624 = 3402^2 + 932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442223) 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, 2275 + ... + 5482.

It is an arithmetic number, because the mean of its divisors is an integer number (1819251).

Almost surely, 2^12442228 is an apocalyptic number.

It is an amenable number.

12442228 is a deficient number, since it is larger than the sum of its proper divisors (9388784).

12442228 is a wasteful number, since it uses less digits than its factorization.

12442228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8162 (or 8160 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 12442228 is about 3527.3542492922. The cubic root of 12442228 is about 231.7213509495.

Adding to 12442228 its reverse (82224421), we get a palindrome (94666649).

The spelling of 12442228 in words is "twelve million, four hundred forty-two thousand, two hundred twenty-eight".