12543028 has 12 divisors (see below), whose sum is σ = 22124032. Its totient is φ = 6221880.

The previous prime is 12542989. The next prime is 12543053. The reversal of 12543028 is 82034521.

It is a junction number, because it is equal to n+sod(n) for n = 12542993 and 12543011.

It is a congruent 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, 11838 + ... + 12853.

Almost surely, 2^12543028 is an apocalyptic number.

It is an amenable number.

12543028 is a deficient number, since it is larger than the sum of its proper divisors (9581004).

12543028 is a wasteful number, since it uses less digits than its factorization.

12543028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24822 (or 24820 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 12543028 is about 3541.6137564675. The cubic root of 12543028 is about 232.3454277635.

Adding to 12543028 its reverse (82034521), we get a palindrome (94577549).

The spelling of 12543028 in words is "twelve million, five hundred forty-three thousand, twenty-eight".