2128812 has 24 divisors (see below), whose sum is σ = 5677056. Its totient is φ = 608208.

The previous prime is 2128799. The next prime is 2128823. The reversal of 2128812 is 2188212.

2128812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12588 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (236544).

2^2128812 is an apocalyptic number.

It is an amenable number.

2128812 is an abundant number, since it is smaller than the sum of its proper divisors (3548244).

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

2128812 is a wasteful number, since it uses less digits than its factorization.

2128812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25357 (or 25355 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 2128812 is about 1459.0448930722. The cubic root of 2128812 is about 128.6409098875.

The spelling of 2128812 in words is "two million, one hundred twenty-eight thousand, eight hundred twelve".