28008408 has 32 divisors (see below), whose sum is σ = 71915760. Its totient is φ = 9083520.

The previous prime is 28008397. The next prime is 28008443. The reversal of 28008408 is 80480082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14883 + ... + 16658.

Almost surely, 2^28008408 is an apocalyptic number.

It is an amenable number.

28008408 is an abundant number, since it is smaller than the sum of its proper divisors (43907352).

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

28008408 is a wasteful number, since it uses less digits than its factorization.

28008408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31587 (or 31583 counting only the distinct ones).

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

The square root of 28008408 is about 5292.2970438176. The cubic root of 28008408 is about 303.6892889553.

The spelling of 28008408 in words is "twenty-eight million, eight thousand, four hundred eight".