28768375 has 16 divisors (see below), whose sum is σ = 37795680. Its totient is φ = 21801600.

The previous prime is 28768367. The next prime is 28768379. The reversal of 28768375 is 57386782.

It is not a de Polignac number, because 28768375 - 2³ = 28768367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768379) 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 15 ways as a sum of consecutive naturals, for example, 3682 + ... + 8431.

It is an arithmetic number, because the mean of its divisors is an integer number (2362230).

Almost surely, 2^28768375 is an apocalyptic number.

28768375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28768375 is a deficient number, since it is larger than the sum of its proper divisors (9027305).

28768375 is a wasteful number, since it uses less digits than its factorization.

28768375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12147 (or 12137 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 28768375 is about 5363.6158512705. The cubic root of 28768375 is about 306.4115349399.

The spelling of 28768375 in words is "twenty-eight million, seven hundred sixty-eight thousand, three hundred seventy-five".