12520544 has 24 divisors (see below), whose sum is σ = 25948440. Its totient is φ = 5930496.

The previous prime is 12520537. The next prime is 12520553. The reversal of 12520544 is 44502521.

It is a happy number.

It is a super-4 number, since 4×12520544⁴ (a number of 29 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 9689 + ... + 10904.

It is an arithmetic number, because the mean of its divisors is an integer number (1081185).

Almost surely, 2^12520544 is an apocalyptic number.

It is an amenable number.

12520544 is an abundant number, since it is smaller than the sum of its proper divisors (13427896).

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

12520544 is a wasteful number, since it uses less digits than its factorization.

12520544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20622 (or 20614 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12520544 is about 3538.4380735008. The cubic root of 12520544 is about 232.2065144918.

The spelling of 12520544 in words is "twelve million, five hundred twenty thousand, five hundred forty-four".