228304185 has 16 divisors (see below), whose sum is σ = 365576640. Its totient is φ = 121665600.

The previous prime is 228304159. The next prime is 228304189. The reversal of 228304185 is 581403822.

It is a de Polignac number, because none of the positive numbers 2^k-228304185 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228304189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16110 + ... + 26760.

It is an arithmetic number, because the mean of its divisors is an integer number (22848540).

Almost surely, 2^228304185 is an apocalyptic number.

It is an amenable number.

228304185 is a deficient number, since it is larger than the sum of its proper divisors (137272455).

228304185 is a wasteful number, since it uses less digits than its factorization.

228304185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12088.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 228304185 is about 15109.7380850894. The cubic root of 228304185 is about 611.1830351404.

The spelling of 228304185 in words is "two hundred twenty-eight million, three hundred four thousand, one hundred eighty-five".