12530856 has 32 divisors (see below), whose sum is σ = 33737760. Its totient is φ = 3855552.

The previous prime is 12530821. The next prime is 12530863. The reversal of 12530856 is 65803521.

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 7 ways as a sum of consecutive naturals, for example, 19770 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (1054305).

Almost surely, 2^12530856 is an apocalyptic number.

It is an amenable number.

12530856 is an abundant number, since it is smaller than the sum of its proper divisors (21206904).

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

12530856 is a wasteful number, since it uses less digits than its factorization.

12530856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40185 (or 40181 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12530856 is about 3539.8949136945. The cubic root of 12530856 is about 232.2702459212.

The spelling of 12530856 in words is "twelve million, five hundred thirty thousand, eight hundred fifty-six".