12324440 has 32 divisors (see below), whose sum is σ = 28190160. Its totient is φ = 4848000.

The previous prime is 12324437. The next prime is 12324497. The reversal of 12324440 is 4442321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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, 86 + ... + 4965.

Almost surely, 2^12324440 is an apocalyptic number.

12324440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12324440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14095080).

12324440 is an abundant number, since it is smaller than the sum of its proper divisors (15865720).

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

12324440 is a wasteful number, since it uses less digits than its factorization.

12324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123 (or 5119 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 12324440 is about 3510.6181791816. The cubic root of 12324440 is about 230.9878119292.

Adding to 12324440 its reverse (4442321), we get a palindrome (16766761).

The spelling of 12324440 in words is "twelve million, three hundred twenty-four thousand, four hundred forty".