228145186 has 16 divisors (see below), whose sum is σ = 353463264. Its totient is φ = 110373984.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145186 is 681541822.

It is not an unprimeable number, because it can be changed into a prime (228145187) 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, 3195 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (22091454).

Almost surely, 2^228145186 is an apocalyptic number.

228145186 is a deficient number, since it is larger than the sum of its proper divisors (125318078).

228145186 is a wasteful number, since it uses less digits than its factorization.

228145186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24945.

The product of its digits is 30720, while the sum is 37.

The square root of 228145186 is about 15104.4756943099. The cubic root of 228145186 is about 611.0411191269.

The spelling of 228145186 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred eighty-six".