12344440 has 32 divisors (see below), whose sum is σ = 28424880. Its totient is φ = 4822272.

The previous prime is 12344429. The next prime is 12344441. The reversal of 12344440 is 4444321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344441) 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 7 ways as a sum of consecutive naturals, for example, 1869 + ... + 5308.

Almost surely, 2^12344440 is an apocalyptic number.

12344440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12344440 is an abundant number, since it is smaller than the sum of its proper divisors (16080440).

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

12344440 is a wasteful number, since it uses less digits than its factorization.

12344440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231 (or 7227 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 12344440 is about 3513.4655256598. The cubic root of 12344440 is about 231.1126927763.

Adding to 12344440 its reverse (4444321), we get a palindrome (16788761).

The spelling of 12344440 in words is "twelve million, three hundred forty-four thousand, four hundred forty".