12290224 has 10 divisors (see below), whose sum is σ = 23812340. Its totient is φ = 6145104.

The previous prime is 12290209. The next prime is 12290227. The reversal of 12290224 is 42209221.

It is a junction number, because it is equal to n+sod(n) for n = 12290195 and 12290204.

It is not an unprimeable number, because it can be changed into a prime (12290227) 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 as a sum of consecutive naturals, namely, 384054 + ... + 384085.

It is an arithmetic number, because the mean of its divisors is an integer number (2381234).

Almost surely, 2^12290224 is an apocalyptic number.

It is an amenable number.

12290224 is a deficient number, since it is larger than the sum of its proper divisors (11522116).

12290224 is an equidigital number, since it uses as much as digits as its factorization.

12290224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768147 (or 768141 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12290224 is about 3505.7415763288. The cubic root of 12290224 is about 230.7738521240.

Adding to 12290224 its reverse (42209221), we get a palindrome (54499445).

The spelling of 12290224 in words is "twelve million, two hundred ninety thousand, two hundred twenty-four".