12520844 has 12 divisors (see below), whose sum is σ = 25041744. Its totient is φ = 5366064.

The previous prime is 12520831. The next prime is 12520853. The reversal of 12520844 is 44802521.

It is a happy number.

12520844 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 223559 + ... + 223614.

It is an arithmetic number, because the mean of its divisors is an integer number (2086812).

Almost surely, 2^12520844 is an apocalyptic number.

12520844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12520844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12520844 is a wasteful number, since it uses less digits than its factorization.

12520844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447184 (or 447182 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 12520844 is about 3538.4804648323. The cubic root of 12520844 is about 232.2083690810.

The spelling of 12520844 in words is "twelve million, five hundred twenty thousand, eight hundred forty-four".