28768502 has 16 divisors (see below), whose sum is σ = 49594272. Its totient is φ = 12260160.

The previous prime is 28768477. The next prime is 28768507. The reversal of 28768502 is 20586782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3143 + ... + 8210.

It is an arithmetic number, because the mean of its divisors is an integer number (3099642).

Almost surely, 2^28768502 is an apocalyptic number.

28768502 is a deficient number, since it is larger than the sum of its proper divisors (20825770).

28768502 is a wasteful number, since it uses less digits than its factorization.

28768502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11543.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28768502 is about 5363.6276902857. The cubic root of 28768502 is about 306.4119858309.

The spelling of 28768502 in words is "twenty-eight million, seven hundred sixty-eight thousand, five hundred two".