28245375 has 32 divisors (see below), whose sum is σ = 52228800. Its totient is φ = 15062400.

The previous prime is 28245361. The next prime is 28245397. The reversal of 28245375 is 57354282.

28245375 is a `hidden beast` number, since 282 + 4 + 5 + 375 = 666.

It is not a de Polignac number, because 28245375 - 2²⁴ = 11468159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (1632150).

Almost surely, 2^28245375 is an apocalyptic number.

28245375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28245375 is a deficient number, since it is larger than the sum of its proper divisors (23983425).

28245375 is an equidigital number, since it uses as much as digits as its factorization.

28245375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393 (or 8377 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 28245375 is about 5314.6378051566. The cubic root of 28245375 is about 304.5433460097.

The spelling of 28245375 in words is "twenty-eight million, two hundred forty-five thousand, three hundred seventy-five".