28529208 has 24 divisors (see below), whose sum is σ = 77266800. Its totient is φ = 9509712.

The previous prime is 28529197. The next prime is 28529233. The reversal of 28529208 is 80292582.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198048 + ... + 198191.

It is an arithmetic number, because the mean of its divisors is an integer number (3219450).

Almost surely, 2^28529208 is an apocalyptic number.

It is an amenable number.

28529208 is an abundant number, since it is smaller than the sum of its proper divisors (48737592).

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

28529208 is a wasteful number, since it uses less digits than its factorization.

28529208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396251 (or 396244 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28529208 is about 5341.2740053287. The cubic root of 28529208 is about 305.5600495550.

The spelling of 28529208 in words is "twenty-eight million, five hundred twenty-nine thousand, two hundred eight".