228942178 has 8 divisors (see below), whose sum is σ = 344335068. Its totient is φ = 114163824.

The previous prime is 228942173. The next prime is 228942193. The reversal of 228942178 is 871249822.

It can be written as a sum of positive squares in 2 ways, for example, as 223592209 + 5349969 = 14953^2 + 2313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (228942173) 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 3 ways as a sum of consecutive naturals, for example, 152701 + ... + 154192.

Almost surely, 2^228942178 is an apocalyptic number.

228942178 is a deficient number, since it is larger than the sum of its proper divisors (115392890).

228942178 is a wasteful number, since it uses less digits than its factorization.

228942178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307268.

The product of its digits is 129024, while the sum is 43.

The square root of 228942178 is about 15130.8353371517. The cubic root of 228942178 is about 611.7518199285.

The spelling of 228942178 in words is "two hundred twenty-eight million, nine hundred forty-two thousand, one hundred seventy-eight".