28306608 has 40 divisors (see below), whose sum is σ = 79774656. Its totient is φ = 8577600.

The previous prime is 28306571. The next prime is 28306609. The reversal of 28306608 is 80660382.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28306609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26278 + ... + 27333.

Almost surely, 2^28306608 is an apocalyptic number.

It is an amenable number.

28306608 is an abundant number, since it is smaller than the sum of its proper divisors (51468048).

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

28306608 is a wasteful number, since it uses less digits than its factorization.

28306608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53633 (or 53627 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 28306608 is about 5320.3954740226. The cubic root of 28306608 is about 304.7632598092.

The spelling of 28306608 in words is "twenty-eight million, three hundred six thousand, six hundred eight".