28300304 has 40 divisors (see below), whose sum is σ = 58335552. Its totient is φ = 13270400.

The previous prime is 28300297. The next prime is 28300313. The reversal of 28300304 is 40300382.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18779 + ... + 20229.

Almost surely, 2^28300304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28300304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29167776).

28300304 is an abundant number, since it is smaller than the sum of its proper divisors (30035248).

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

28300304 is a wasteful number, since it uses less digits than its factorization.

28300304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 28300304 is about 5319.8030038715. The cubic root of 28300304 is about 304.7406341119.

Adding to 28300304 its reverse (40300382), we get a palindrome (68600686).

The spelling of 28300304 in words is "twenty-eight million, three hundred thousand, three hundred four".