28516304 has 10 divisors (see below), whose sum is σ = 55250370. Its totient is φ = 14258144.

The previous prime is 28516303. The next prime is 28516331. The reversal of 28516304 is 40361582.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 2096704 = 5140^2 + 1448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28516303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891119 + ... + 891150.

It is an arithmetic number, because the mean of its divisors is an integer number (5525037).

Almost surely, 2^28516304 is an apocalyptic number.

It is an amenable number.

28516304 is a deficient number, since it is larger than the sum of its proper divisors (26734066).

28516304 is a wasteful number, since it uses less digits than its factorization.

28516304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782277 (or 1782271 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28516304 is about 5340.0659171962. The cubic root of 28516304 is about 305.5139734832.

Adding to 28516304 its reverse (40361582), we get a palindrome (68877886).

The spelling of 28516304 in words is "twenty-eight million, five hundred sixteen thousand, three hundred four".