2221304 has 8 divisors (see below), whose sum is σ = 4164960. Its totient is φ = 1110648.

The previous prime is 2221301. The next prime is 2221321. The reversal of 2221304 is 4031222.

2221304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221301) 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 as a sum of consecutive naturals, namely, 138824 + ... + 138839.

It is an arithmetic number, because the mean of its divisors is an integer number (520620).

2^2221304 is an apocalyptic number.

It is an amenable number.

2221304 is a deficient number, since it is larger than the sum of its proper divisors (1943656).

2221304 is a wasteful number, since it uses less digits than its factorization.

2221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277669 (or 277665 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2221304 is about 1490.4039720827. The cubic root of 2221304 is about 130.4776119705.

Adding to 2221304 its reverse (4031222), we get a palindrome (6252526).

The spelling of 2221304 in words is "two million, two hundred twenty-one thousand, three hundred four".