12520344 has 32 divisors (see below), whose sum is σ = 32382000. Its totient is φ = 4029312.

The previous prime is 12520337. The next prime is 12520351. The reversal of 12520344 is 44302521.

It is an interprime number because it is at equal distance from previous prime (12520337) and next prime (12520351).

It is a self number, because there is not a number n which added to its sum of digits gives 12520344.

It is a congruent number.

It is an unprimeable number.

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, 8299 + ... + 9690.

Almost surely, 2^12520344 is an apocalyptic number.

It is an amenable number.

12520344 is an abundant number, since it is smaller than the sum of its proper divisors (19861656).

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

12520344 is a wasteful number, since it uses less digits than its factorization.

12520344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18027 (or 18023 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12520344 is about 3538.4098123310. The cubic root of 12520344 is about 232.2052780825.

Adding to 12520344 its reverse (44302521), we get a palindrome (56822865).

The spelling of 12520344 in words is "twelve million, five hundred twenty thousand, three hundred forty-four".