228382866 has 24 divisors (see below), whose sum is σ = 495114204.
Its totient is φ = 76083840.
The previous prime is 228382853. The next prime is 228382867. The reversal of 228382866 is 668283822.
228382866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 228161025 + 221841 = 15105^2 + 471^2
It is not an unprimeable number, because it can be changed into a prime (228382867) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49206 + ... + 53646.
Almost surely, 2228382866 is an apocalyptic number.
228382866 is an abundant number, since it is smaller than the sum of its proper divisors (266731338).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228382866 is a wasteful number, since it uses less digits than its factorization.
228382866 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7306 (or 7303 counting only the distinct ones).
The product of its digits is 442368, while the sum is 45.
The square root of 228382866 is about 15112.3415128166.
The cubic root of 228382866 is about 611.2532382179.
The spelling of 228382866 in words is "two hundred twenty-eight million, three hundred eighty-two thousand, eight hundred sixty-six".