28393375 has 8 divisors (see below), whose sum is σ = 35435088. Its totient is φ = 22714600.

The previous prime is 28393369. The next prime is 28393381. The reversal of 28393375 is 57339382.

It is an interprime number because it is at equal distance from previous prime (28393369) and next prime (28393381).

It is not a de Polignac number, because 28393375 - 2⁹ = 28392863 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, 113449 + ... + 113698.

It is an arithmetic number, because the mean of its divisors is an integer number (4429386).

Almost surely, 2^28393375 is an apocalyptic number.

28393375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28393375 is a deficient number, since it is larger than the sum of its proper divisors (7041713).

28393375 is an equidigital number, since it uses as much as digits as its factorization.

28393375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227162 (or 227152 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The square root of 28393375 is about 5328.5434219869. The cubic root of 28393375 is about 305.0743346542.

The spelling of 28393375 in words is "twenty-eight million, three hundred ninety-three thousand, three hundred seventy-five".