228133268 has 48 divisors (see below), whose sum is σ = 473667264. Its totient is φ = 94947840.

The previous prime is 228133267. The next prime is 228133303. The reversal of 228133268 is 862331822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228133267) 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, 23555 + ... + 31797.

It is an arithmetic number, because the mean of its divisors is an integer number (9868068).

Almost surely, 2^228133268 is an apocalyptic number.

It is an amenable number.

228133268 is an abundant number, since it is smaller than the sum of its proper divisors (245533996).

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

228133268 is a wasteful number, since it uses less digits than its factorization.

228133268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312 (or 8310 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 228133268 is about 15104.0811703327. The cubic root of 228133268 is about 611.0304789508.

The spelling of 228133268 in words is "two hundred twenty-eight million, one hundred thirty-three thousand, two hundred sixty-eight".