28813608 has 48 divisors (see below), whose sum is σ = 78468000. Its totient is φ = 9551520.

The previous prime is 28813597. The next prime is 28813621. The reversal of 28813608 is 80631882.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13323 + ... + 15333.

It is an arithmetic number, because the mean of its divisors is an integer number (1634750).

Almost surely, 2^28813608 is an apocalyptic number.

It is an amenable number.

28813608 is an abundant number, since it is smaller than the sum of its proper divisors (49654392).

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

28813608 is a wasteful number, since it uses less digits than its factorization.

28813608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28813608 is about 5367.8308468133. The cubic root of 28813608 is about 306.5720428500.

The spelling of 28813608 in words is "twenty-eight million, eight hundred thirteen thousand, six hundred eight".