228145178 has 16 divisors (see below), whose sum is σ = 350921160. Its totient is φ = 111199296.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145178 is 871541822.

It can be written as a sum of positive squares in 4 ways, for example, as 220730449 + 7414729 = 14857^2 + 2723^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9788 + ... + 23496.

Almost surely, 2^228145178 is an apocalyptic number.

228145178 is a deficient number, since it is larger than the sum of its proper divisors (122775982).

228145178 is a wasteful number, since it uses less digits than its factorization.

228145178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921.

The product of its digits is 35840, while the sum is 38.

The square root of 228145178 is about 15104.4754294878. The cubic root of 228145178 is about 611.0411119848.

The spelling of 228145178 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred seventy-eight".