12724443 has 6 divisors (see below), whose sum is σ = 18379764. Its totient is φ = 8482956.

The previous prime is 12724441. The next prime is 12724447. The reversal of 12724443 is 34442721.

It is not a de Polignac number, because 12724443 - 2¹ = 12724441 is a prime.

It is a super-2 number, since 2×12724443² = 323822899320498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12724441) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 706905 + ... + 706922.

It is an arithmetic number, because the mean of its divisors is an integer number (3063294).

Almost surely, 2^12724443 is an apocalyptic number.

12724443 is a deficient number, since it is larger than the sum of its proper divisors (5655321).

12724443 is a wasteful number, since it uses less digits than its factorization.

12724443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413833 (or 1413830 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 12724443 is about 3567.1337233134. The cubic root of 12724443 is about 233.4602395820.

The spelling of 12724443 in words is "twelve million, seven hundred twenty-four thousand, four hundred forty-three".