28768808 has 16 divisors (see below), whose sum is σ = 54000000. Its totient is φ = 14368816.

The previous prime is 28768801. The next prime is 28768823. The reversal of 28768808 is 80886782.

It is not an unprimeable number, because it can be changed into a prime (28768801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10793 + ... + 13191.

It is an arithmetic number, because the mean of its divisors is an integer number (3375000).

Almost surely, 2^28768808 is an apocalyptic number.

It is an amenable number.

28768808 is a deficient number, since it is larger than the sum of its proper divisors (25231192).

28768808 is a wasteful number, since it uses less digits than its factorization.

28768808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 28768808 is about 5363.6562156797. The cubic root of 28768808 is about 306.4130722244.

The spelling of 28768808 in words is "twenty-eight million, seven hundred sixty-eight thousand, eight hundred eight".