28578304 has 20 divisors (see below), whose sum is σ = 57101814. Its totient is φ = 14288896.

The previous prime is 28578293. The next prime is 28578313. The reversal of 28578304 is 40387582.

It can be written as a sum of positive squares in only one way, i.e., 15618304 + 12960000 = 3952^2 + 3600^2 .

It is an unprimeable number.

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, 27397 + ... + 28420.

Almost surely, 2^28578304 is an apocalyptic number.

It is an amenable number.

28578304 is a deficient number, since it is larger than the sum of its proper divisors (28523510).

28578304 is an frugal number, since it uses more digits than its factorization.

28578304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55835 (or 55819 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28578304 is about 5345.8679370145. The cubic root of 28578304 is about 305.7352288411.

It can be divided in two parts, 28578 and 304, that added together give a palindrome (28882).

The spelling of 28578304 in words is "twenty-eight million, five hundred seventy-eight thousand, three hundred four".