12538544 has 20 divisors (see below), whose sum is σ = 24537120. Its totient is φ = 6206400.

The previous prime is 12538543. The next prime is 12538549. The reversal of 12538544 is 44583521.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12538544.

It is not an unprimeable number, because it can be changed into a prime (12538541) 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, 2264 + ... + 5495.

It is an arithmetic number, because the mean of its divisors is an integer number (1226856).

Almost surely, 2^12538544 is an apocalyptic number.

It is an amenable number.

12538544 is a deficient number, since it is larger than the sum of its proper divisors (11998576).

12538544 is a wasteful number, since it uses less digits than its factorization.

12538544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7868 (or 7862 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 12538544 is about 3540.9806551293. The cubic root of 12538544 is about 232.3177374516.

The spelling of 12538544 in words is "twelve million, five hundred thirty-eight thousand, five hundred forty-four".