28661008 has 20 divisors (see below), whose sum is σ = 55903168. Its totient is φ = 14234400.

The previous prime is 28660999. The next prime is 28661011. The reversal of 28661008 is 80016682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516 + ... + 8347.

Almost surely, 2^28661008 is an apocalyptic number.

It is an amenable number.

28661008 is a deficient number, since it is larger than the sum of its proper divisors (27242160).

28661008 is a wasteful number, since it uses less digits than its factorization.

28661008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12022 (or 12016 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 28661008 is about 5353.5976688578. The cubic root of 28661008 is about 306.0298716335.

The spelling of 28661008 in words is "twenty-eight million, six hundred sixty-one thousand, eight".