28045304 has 16 divisors (see below), whose sum is σ = 60097200. Its totient is φ = 12019392.

The previous prime is 28045301. The next prime is 28045327. The reversal of 28045304 is 40354082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28045301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250349 + ... + 250460.

It is an arithmetic number, because the mean of its divisors is an integer number (3756075).

Almost surely, 2^28045304 is an apocalyptic number.

It is an amenable number.

28045304 is an abundant number, since it is smaller than the sum of its proper divisors (32051896).

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

28045304 is a wasteful number, since it uses less digits than its factorization.

28045304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500822 (or 500818 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28045304 is about 5295.7817175560. The cubic root of 28045304 is about 303.8225823037.

Adding to 28045304 its reverse (40354082), we get a palindrome (68399386).

The spelling of 28045304 in words is "twenty-eight million, forty-five thousand, three hundred four".