2821804 has 24 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 1320336.

The previous prime is 2821771. The next prime is 2821807. The reversal of 2821804 is 4081282.

2821804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2821807) by changing a digit.

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, 7959 + ... + 8305.

It is an arithmetic number, because the mean of its divisors is an integer number (219240).

2^2821804 is an apocalyptic number.

It is an amenable number.

2821804 is a deficient number, since it is larger than the sum of its proper divisors (2439956).

2821804 is a wasteful number, since it uses less digits than its factorization.

2821804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 2821804 is about 1679.8226096823. The cubic root of 2821804 is about 141.3108845521.

The spelling of 2821804 in words is "two million, eight hundred twenty-one thousand, eight hundred four".