18428875 has 16 divisors (see below), whose sum is σ = 23119200. Its totient is φ = 14666400.

The previous prime is 18428873. The next prime is 18428887. The reversal of 18428875 is 57882481.

It is not a de Polignac number, because 18428875 - 2¹ = 18428873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18428873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47181 + ... + 47569.

It is an arithmetic number, because the mean of its divisors is an integer number (1444950).

Almost surely, 2^18428875 is an apocalyptic number.

18428875 is a deficient number, since it is larger than the sum of its proper divisors (4690325).

18428875 is an equidigital number, since it uses as much as digits as its factorization.

18428875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 773 counting only the distinct ones).

The product of its digits is 143360, while the sum is 43.

The square root of 18428875 is about 4292.8865580166. The cubic root of 18428875 is about 264.1392506496.

The spelling of 18428875 in words is "eighteen million, four hundred twenty-eight thousand, eight hundred seventy-five".