12621244 has 24 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 5891760.

The previous prime is 12621241. The next prime is 12621251. The reversal of 12621244 is 44212621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621241) 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 7 ways as a sum of consecutive naturals, for example, 4227 + ... + 6565.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^12621244 is an apocalyptic number.

It is an amenable number.

12621244 is a deficient number, since it is larger than the sum of its proper divisors (10965956).

12621244 is a wasteful number, since it uses less digits than its factorization.

12621244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2431 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 12621244 is about 3552.6390190955. The cubic root of 12621244 is about 232.8273817102.

Adding to 12621244 its reverse (44212621), we get a palindrome (56833865).

The spelling of 12621244 in words is "twelve million, six hundred twenty-one thousand, two hundred forty-four".