28008304 has 10 divisors (see below), whose sum is σ = 54266120. Its totient is φ = 14004144.

The previous prime is 28008269. The next prime is 28008307. The reversal of 28008304 is 40380082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 875244 + ... + 875275.

It is an arithmetic number, because the mean of its divisors is an integer number (5426612).

Almost surely, 2^28008304 is an apocalyptic number.

It is an amenable number.

28008304 is a deficient number, since it is larger than the sum of its proper divisors (26257816).

28008304 is a wasteful number, since it uses less digits than its factorization.

28008304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750527 (or 1750521 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28008304 is about 5292.2872182073. The cubic root of 28008304 is about 303.6889130715.

Adding to 28008304 its reverse (40380082), we get a palindrome (68388386).

The spelling of 28008304 in words is "twenty-eight million, eight thousand, three hundred four".