28788735 has 48 divisors (see below), whose sum is σ = 50839200. Its totient is φ = 13891584.

The previous prime is 28788719. The next prime is 28788763. The reversal of 28788735 is 53788782.

It is not a de Polignac number, because 28788735 - 2⁴ = 28788719 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125601 + ... + 125829.

It is an arithmetic number, because the mean of its divisors is an integer number (1059150).

Almost surely, 2^28788735 is an apocalyptic number.

28788735 is a deficient number, since it is larger than the sum of its proper divisors (22050465).

28788735 is a wasteful number, since it uses less digits than its factorization.

28788735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 283 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 28788735 is about 5365.5134889403. The cubic root of 28788735 is about 306.4838025800.

The spelling of 28788735 in words is "twenty-eight million, seven hundred eighty-eight thousand, seven hundred thirty-five".