28393075 has 12 divisors (see below), whose sum is σ = 35287920. Its totient is φ = 22662560.

The previous prime is 28393067. The next prime is 28393081. The reversal of 28393075 is 57039382.

It is not a de Polignac number, because 28393075 - 2³ = 28393067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12906 + ... + 14944.

It is an arithmetic number, because the mean of its divisors is an integer number (2940660).

Almost surely, 2^28393075 is an apocalyptic number.

28393075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28393075 is a deficient number, since it is larger than the sum of its proper divisors (6894845).

28393075 is a wasteful number, since it uses less digits than its factorization.

28393075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28393075 is about 5328.5152716306. The cubic root of 28393075 is about 305.0732601944.

The spelling of 28393075 in words is "twenty-eight million, three hundred ninety-three thousand, seventy-five".