28204316 has 12 divisors (see below), whose sum is σ = 56408688. Its totient is φ = 12087552.

The previous prime is 28204291. The next prime is 28204331. The reversal of 28204316 is 61340282.

28204316 is an admirable number.

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, 503621 + ... + 503676.

It is an arithmetic number, because the mean of its divisors is an integer number (4700724).

Almost surely, 2^28204316 is an apocalyptic number.

It is an amenable number.

28204316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28204316 is a wasteful number, since it uses less digits than its factorization.

28204316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007308 (or 1007306 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28204316 is about 5310.7735783029. The cubic root of 28204316 is about 304.3957075722.

Adding to 28204316 its reverse (61340282), we get a palindrome (89544598).

The spelling of 28204316 in words is "twenty-eight million, two hundred four thousand, three hundred sixteen".