12440744 has 16 divisors (see below), whose sum is σ = 24554400. Its totient is φ = 5892912.

The previous prime is 12440741. The next prime is 12440809. The reversal of 12440744 is 44704421.

It is a super-2 number, since 2×12440744² = 309544222547072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12440741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40772 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (1534650).

Almost surely, 2^12440744 is an apocalyptic number.

It is an amenable number.

12440744 is a deficient number, since it is larger than the sum of its proper divisors (12113656).

12440744 is a wasteful number, since it uses less digits than its factorization.

12440744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81872 (or 81868 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 12440744 is about 3527.1438870565. The cubic root of 12440744 is about 231.7121380186.

The spelling of 12440744 in words is "twelve million, four hundred forty thousand, seven hundred forty-four".