28260304 has 20 divisors (see below), whose sum is σ = 56235364. Its totient is φ = 13747968.

The previous prime is 28260269. The next prime is 28260311. The reversal of 28260304 is 40306282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12673600 + 15586704 = 3560^2 + 3948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23277 + ... + 24460.

Almost surely, 2^28260304 is an apocalyptic number.

It is an amenable number.

28260304 is a deficient number, since it is larger than the sum of its proper divisors (27975060).

28260304 is a wasteful number, since it uses less digits than its factorization.

28260304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47782 (or 47776 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28260304 is about 5316.0421367781. The cubic root of 28260304 is about 304.5969916871.

Adding to 28260304 its reverse (40306282), we get a palindrome (68566586).

The spelling of 28260304 in words is "twenty-eight million, two hundred sixty thousand, three hundred four".