28997008 has 20 divisors (see below), whose sum is σ = 56322288. Its totient is φ = 14462240.

The previous prime is 28996993. The next prime is 28997027. The reversal of 28997008 is 80079982.

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, 5043 + ... + 9133.

Almost surely, 2^28997008 is an apocalyptic number.

It is an amenable number.

28997008 is a deficient number, since it is larger than the sum of its proper divisors (27325280).

28997008 is a wasteful number, since it uses less digits than its factorization.

28997008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542 (or 4536 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 28997008 is about 5384.8869997429. The cubic root of 28997008 is about 307.2211162604.

The spelling of 28997008 in words is "twenty-eight million, nine hundred ninety-seven thousand, eight".