12544443 has 32 divisors (see below), whose sum is σ = 19790400. Its totient is φ = 7838208.

The previous prime is 12544423. The next prime is 12544447. The reversal of 12544443 is 34444521.

It is a happy number.

It is not a de Polignac number, because 12544443 - 2⁶ = 12544379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12544447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28755 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (618450).

Almost surely, 2^12544443 is an apocalyptic number.

12544443 is a deficient number, since it is larger than the sum of its proper divisors (7245957).

12544443 is a wasteful number, since it uses less digits than its factorization.

12544443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 12544443 is about 3541.8135185241. The cubic root of 12544443 is about 232.3541645273.

Adding to 12544443 its reverse (34444521), we get a palindrome (46988964).

The spelling of 12544443 in words is "twelve million, five hundred forty-four thousand, four hundred forty-three".