28522308 has 12 divisors (see below), whose sum is σ = 66552080. Its totient is φ = 9507432.

The previous prime is 28522303. The next prime is 28522309. The reversal of 28522308 is 80322582.

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

It is not an unprimeable number, because it can be changed into a prime (28522303) by changing a digit.

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, 1188418 + ... + 1188441.

Almost surely, 2^28522308 is an apocalyptic number.

It is an amenable number.

28522308 is an abundant number, since it is smaller than the sum of its proper divisors (38029772).

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

28522308 is a wasteful number, since it uses less digits than its factorization.

28522308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376866 (or 2376864 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 28522308 is about 5340.6280529541. The cubic root of 28522308 is about 305.5354135826.

The spelling of 28522308 in words is "twenty-eight million, five hundred twenty-two thousand, three hundred eight".