28820208 has 20 divisors (see below), whose sum is σ = 74452328. Its totient is φ = 9606720.

The previous prime is 28820179. The next prime is 28820221. The reversal of 28820208 is 80202882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300163 + ... + 300258.

Almost surely, 2^28820208 is an apocalyptic number.

It is an amenable number.

28820208 is an abundant number, since it is smaller than the sum of its proper divisors (45632120).

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

28820208 is a wasteful number, since it uses less digits than its factorization.

28820208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600432 (or 600426 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 28820208 is about 5368.4455850833. The cubic root of 28820208 is about 306.5954487005.

The spelling of 28820208 in words is "twenty-eight million, eight hundred twenty thousand, two hundred eight".