7221804 has 24 divisors (see below), whose sum is σ = 17842608. Its totient is φ = 2265600.

The previous prime is 7221779. The next prime is 7221811. The reversal of 7221804 is 4081227.

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, 17497 + ... + 17904.

It is an arithmetic number, because the mean of its divisors is an integer number (743442).

Almost surely, 2^7221804 is an apocalyptic number.

It is an amenable number.

7221804 is an abundant number, since it is smaller than the sum of its proper divisors (10620804).

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

7221804 is a wasteful number, since it uses less digits than its factorization.

7221804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35425 (or 35423 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 7221804 is about 2687.3414371829. The cubic root of 7221804 is about 193.2926020681.

The spelling of 7221804 in words is "seven million, two hundred twenty-one thousand, eight hundred four".