28232304 has 20 divisors (see below), whose sum is σ = 72933576. Its totient is φ = 9410752.

The previous prime is 28232299. The next prime is 28232317. The reversal of 28232304 is 40323282.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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, 294039 + ... + 294134.

Almost surely, 2^28232304 is an apocalyptic number.

28232304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28232304 is an abundant number, since it is smaller than the sum of its proper divisors (44701272).

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

28232304 is a wasteful number, since it uses less digits than its factorization.

28232304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588184 (or 588178 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 28232304 is about 5313.4079459420. The cubic root of 28232304 is about 304.4963613231.

Adding to 28232304 its reverse (40323282), we get a palindrome (68555586).

The spelling of 28232304 in words is "twenty-eight million, two hundred thirty-two thousand, three hundred four".