2804224 has 20 divisors (see below), whose sum is σ = 5603994. Its totient is φ = 1401856.

The previous prime is 2804209. The next prime is 2804227. The reversal of 2804224 is 4224082.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 1364224 = 1200^2 + 1168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2804195 and 2804204.

It is not an unprimeable number, because it can be changed into a prime (2804227) by changing a digit.

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 as a sum of consecutive naturals, namely, 2227 + ... + 3250.

2^2804224 is an apocalyptic number.

It is an amenable number.

2804224 is a deficient number, since it is larger than the sum of its proper divisors (2799770).

2804224 is an frugal number, since it uses more digits than its factorization.

2804224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495 (or 5479 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2804224 is about 1674.5817388232. The cubic root of 2804224 is about 141.0168147209.

The spelling of 2804224 in words is "two million, eight hundred four thousand, two hundred twenty-four".