28928888 has 8 divisors (see below), whose sum is σ = 54241680. Its totient is φ = 14464440.

The previous prime is 28928843. The next prime is 28928891. The reversal of 28928888 is 88882982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808048 + ... + 1808063.

It is an arithmetic number, because the mean of its divisors is an integer number (6780210).

Almost surely, 2^28928888 is an apocalyptic number.

It is an amenable number.

28928888 is a deficient number, since it is larger than the sum of its proper divisors (25312792).

28928888 is a wasteful number, since it uses less digits than its factorization.

28928888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616117 (or 3616113 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 53.

The square root of 28928888 is about 5378.5581711087. The cubic root of 28928888 is about 306.9803522034.

The spelling of 28928888 in words is "twenty-eight million, nine hundred twenty-eight thousand, eight hundred eighty-eight".