12821875 has 24 divisors (see below), whose sum is σ = 17530128. Its totient is φ = 9300000.

The previous prime is 12821843. The next prime is 12821891. The reversal of 12821875 is 57812821.

It is not a de Polignac number, because 12821875 - 2⁵ = 12821843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12821875.

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 23 ways as a sum of consecutive naturals, for example, 34189 + ... + 34561.

It is an arithmetic number, because the mean of its divisors is an integer number (730422).

Almost surely, 2^12821875 is an apocalyptic number.

12821875 is a deficient number, since it is larger than the sum of its proper divisors (4708253).

12821875 is an frugal number, since it uses more digits than its factorization.

12821875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 389 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 12821875 is about 3580.7645831582. The cubic root of 12821875 is about 234.0545992349.

The spelling of 12821875 in words is "twelve million, eight hundred twenty-one thousand, eight hundred seventy-five".