228542185 has 16 divisors (see below), whose sum is σ = 286650000. Its totient is φ = 174698496.

The previous prime is 228542183. The next prime is 228542213. The reversal of 228542185 is 581245822.

It can be written as a sum of positive squares in 8 ways, for example, as 290521 + 228251664 = 539^2 + 15108^2 .

It is a cyclic number.

It is not a de Polignac number, because 228542185 - 2¹ = 228542183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228542183) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5941 + ... + 22189.

It is an arithmetic number, because the mean of its divisors is an integer number (17915625).

Almost surely, 2^228542185 is an apocalyptic number.

It is an amenable number.

228542185 is a deficient number, since it is larger than the sum of its proper divisors (58107815).

228542185 is a wasteful number, since it uses less digits than its factorization.

228542185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380.

The product of its digits is 51200, while the sum is 37.

The square root of 228542185 is about 15117.6117492149. The cubic root of 228542185 is about 611.3953411409.

The spelling of 228542185 in words is "two hundred twenty-eight million, five hundred forty-two thousand, one hundred eighty-five".