28523408 has 20 divisors (see below), whose sum is σ = 58173360. Its totient is φ = 13510944.

The previous prime is 28523371. The next prime is 28523419. The reversal of 28523408 is 80432582.

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 3 ways as a sum of consecutive naturals, for example, 46610 + ... + 47217.

It is an arithmetic number, because the mean of its divisors is an integer number (2908668).

Almost surely, 2^28523408 is an apocalyptic number.

It is an amenable number.

28523408 is an abundant number, since it is smaller than the sum of its proper divisors (29649952).

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

28523408 is a wasteful number, since it uses less digits than its factorization.

28523408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93854 (or 93848 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28523408 is about 5340.7310361036. The cubic root of 28523408 is about 305.5393413227.

The spelling of 28523408 in words is "twenty-eight million, five hundred twenty-three thousand, four hundred eight".