28283375 has 8 divisors (see below), whose sum is σ = 35297808. Its totient is φ = 22626600.

The previous prime is 28283369. The next prime is 28283383. The reversal of 28283375 is 57338282.

It is not a de Polignac number, because 28283375 - 2⁸ = 28283119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 113009 + ... + 113258.

It is an arithmetic number, because the mean of its divisors is an integer number (4412226).

Almost surely, 2^28283375 is an apocalyptic number.

28283375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28283375 is a deficient number, since it is larger than the sum of its proper divisors (7014433).

28283375 is an equidigital number, since it uses as much as digits as its factorization.

28283375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226282 (or 226272 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 28283375 is about 5318.2116355030. The cubic root of 28283375 is about 304.6798575773.

The spelling of 28283375 in words is "twenty-eight million, two hundred eighty-three thousand, three hundred seventy-five".