28888904 has 16 divisors (see below), whose sum is σ = 59091120. Its totient is φ = 13131280.

The previous prime is 28888903. The next prime is 28888939. The reversal of 28888904 is 40988882.

It is not an unprimeable number, because it can be changed into a prime (28888903) 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 in 3 ways as a sum of consecutive naturals, for example, 164054 + ... + 164229.

It is an arithmetic number, because the mean of its divisors is an integer number (3693195).

Almost surely, 2^28888904 is an apocalyptic number.

It is an amenable number.

28888904 is an abundant number, since it is smaller than the sum of its proper divisors (30202216).

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

28888904 is a wasteful number, since it uses less digits than its factorization.

28888904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328300 (or 328296 counting only the distinct ones).

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

The square root of 28888904 is about 5374.8399045925. The cubic root of 28888904 is about 306.8388562506.

It can be divided in two parts, 28888 and 904, that added together give a palindrome (29792).

The spelling of 28888904 in words is "twenty-eight million, eight hundred eighty-eight thousand, nine hundred four".