28904888 has 16 divisors (see below), whose sum is σ = 54612360. Its totient is φ = 14341600.

The previous prime is 28904849. The next prime is 28904891. The reversal of 28904888 is 88840982.

It is a congruent number.

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, 12743 + ... + 14838.

Almost surely, 2^28904888 is an apocalyptic number.

It is an amenable number.

28904888 is a deficient number, since it is larger than the sum of its proper divisors (25707472).

28904888 is a wasteful number, since it uses less digits than its factorization.

28904888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27718 (or 27714 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 28904888 is about 5376.3266269824. The cubic root of 28904888 is about 306.8954363135.

It can be divided in two parts, 28904 and 888, that added together give a palindrome (29792).

The spelling of 28904888 in words is "twenty-eight million, nine hundred four thousand, eight hundred eighty-eight".