4021804 has 12 divisors (see below), whose sum is σ = 7056504. Its totient is φ = 2005664.

The previous prime is 4021777. The next prime is 4021867. The reversal of 4021804 is 4081204.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 792 + ... + 2944.

It is an arithmetic number, because the mean of its divisors is an integer number (588042).

Almost surely, 2^4021804 is an apocalyptic number.

It is an amenable number.

4021804 is a deficient number, since it is larger than the sum of its proper divisors (3034700).

4021804 is a wasteful number, since it uses less digits than its factorization.

4021804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4021804 is about 2005.4435918270. The cubic root of 4021804 is about 159.0280134706.

The spelling of 4021804 in words is "four million, twenty-one thousand, eight hundred four".