28516308 has 12 divisors (see below), whose sum is σ = 66538080. Its totient is φ = 9505432.

The previous prime is 28516303. The next prime is 28516331. The reversal of 28516308 is 80361582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 1188168 + ... + 1188191.

It is an arithmetic number, because the mean of its divisors is an integer number (5544840).

Almost surely, 2^28516308 is an apocalyptic number.

It is an amenable number.

28516308 is an abundant number, since it is smaller than the sum of its proper divisors (38021772).

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

28516308 is a wasteful number, since it uses less digits than its factorization.

28516308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376366 (or 2376364 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28516308 is about 5340.0662917234. The cubic root of 28516308 is about 305.5139877681.

The spelling of 28516308 in words is "twenty-eight million, five hundred sixteen thousand, three hundred eight".