12443740 has 12 divisors (see below), whose sum is σ = 26131896. Its totient is φ = 4977488.

The previous prime is 12443731. The next prime is 12443747. The reversal of 12443740 is 4734421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443747) 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, 311074 + ... + 311113.

It is an arithmetic number, because the mean of its divisors is an integer number (2177658).

Almost surely, 2^12443740 is an apocalyptic number.

12443740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12443740 is an abundant number, since it is smaller than the sum of its proper divisors (13688156).

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

12443740 is a wasteful number, since it uses less digits than its factorization.

12443740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622196 (or 622194 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 12443740 is about 3527.5685677248. The cubic root of 12443740 is about 231.7307369558.

The spelling of 12443740 in words is "twelve million, four hundred forty-three thousand, seven hundred forty".