28008908 has 6 divisors (see below), whose sum is σ = 49015596. Its totient is φ = 14004452.

The previous prime is 28008901. The next prime is 28008919. The reversal of 28008908 is 80980082.

It is not an unprimeable number, because it can be changed into a prime (28008901) by changing a digit.

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 as a sum of consecutive naturals, namely, 3501110 + ... + 3501117.

It is an arithmetic number, because the mean of its divisors is an integer number (8169266).

Almost surely, 2^28008908 is an apocalyptic number.

It is an amenable number.

28008908 is a deficient number, since it is larger than the sum of its proper divisors (21006688).

28008908 is a wasteful number, since it uses less digits than its factorization.

28008908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002231 (or 7002229 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 28008908 is about 5292.3442820739. The cubic root of 28008908 is about 303.6910960762.

The spelling of 28008908 in words is "twenty-eight million, eight thousand, nine hundred eight".