28224304 has 20 divisors (see below), whose sum is σ = 54800064. Its totient is φ = 14082368.

The previous prime is 28224293. The next prime is 28224307. The reversal of 28224304 is 40342282.

It is a super-2 number, since 2×28224304² = 1593222672568832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28224307) by changing a digit.

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, 7329 + ... + 10495.

Almost surely, 2^28224304 is an apocalyptic number.

It is an amenable number.

28224304 is a deficient number, since it is larger than the sum of its proper divisors (26575760).

28224304 is a wasteful number, since it uses less digits than its factorization.

28224304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732 (or 3726 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 28224304 is about 5312.6550800894. The cubic root of 28224304 is about 304.4675975706.

Adding to 28224304 its reverse (40342282), we get a palindrome (68566586).

The spelling of 28224304 in words is "twenty-eight million, two hundred twenty-four thousand, three hundred four".