228214818 has 24 divisors (see below), whose sum is σ = 532501788. Its totient is φ = 70219872.

The previous prime is 228214813. The next prime is 228214829. The reversal of 228214818 is 818412822.

It can be written as a sum of positive squares in 2 ways, for example, as 218832849 + 9381969 = 14793^2 + 3063^2 .

It is not an unprimeable number, because it can be changed into a prime (228214813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487405 + ... + 487872.

Almost surely, 2^228214818 is an apocalyptic number.

228214818 is an abundant number, since it is smaller than the sum of its proper divisors (304286970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228214818 is a wasteful number, since it uses less digits than its factorization.

228214818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975298 (or 975295 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 228214818 is about 15106.7805306094. The cubic root of 228214818 is about 611.1032779186.

The spelling of 228214818 in words is "two hundred twenty-eight million, two hundred fourteen thousand, eight hundred eighteen".