2123804 has 12 divisors (see below), whose sum is σ = 3762024. Its totient is φ = 1048944.

The previous prime is 2123791. The next prime is 2123831. The reversal of 2123804 is 4083212.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹³ + 3³ + 8⁷ + 0 + 4⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867 + ... + 3530.

It is an arithmetic number, because the mean of its divisors is an integer number (313502).

2^2123804 is an apocalyptic number.

It is an amenable number.

2123804 is a deficient number, since it is larger than the sum of its proper divisors (1638220).

2123804 is a wasteful number, since it uses less digits than its factorization.

2123804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2123804 is about 1457.3276913584. The cubic root of 2123804 is about 128.5399553768.

The spelling of 2123804 in words is "two million, one hundred twenty-three thousand, eight hundred four".