28563185 has 8 divisors (see below), whose sum is σ = 39172416. Its totient is φ = 19586160.

The previous prime is 28563127. The next prime is 28563187. The reversal of 28563185 is 58136582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28563185 - 2¹⁰ = 28562161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28563187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408011 + ... + 408080.

It is an arithmetic number, because the mean of its divisors is an integer number (4896552).

Almost surely, 2^28563185 is an apocalyptic number.

It is an amenable number.

28563185 is a deficient number, since it is larger than the sum of its proper divisors (10609231).

28563185 is an equidigital number, since it uses as much as digits as its factorization.

28563185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816103.

The product of its digits is 57600, while the sum is 38.

The square root of 28563185 is about 5344.4536671207. The cubic root of 28563185 is about 305.6813041773.

The spelling of 28563185 in words is "twenty-eight million, five hundred sixty-three thousand, one hundred eighty-five".