228809866 has 8 divisors (see below), whose sum is σ = 343437984. Its totient is φ = 114330540.

The previous prime is 228809849. The next prime is 228809869. The reversal of 228809866 is 668908822.

228809866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (228809869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33270 + ... + 39553.

It is an arithmetic number, because the mean of its divisors is an integer number (42929748).

Almost surely, 2^228809866 is an apocalyptic number.

228809866 is a deficient number, since it is larger than the sum of its proper divisors (114628118).

228809866 is a wasteful number, since it uses less digits than its factorization.

228809866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74396.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 228809866 is about 15126.4624416947. The cubic root of 228809866 is about 611.6339478011.

The spelling of 228809866 in words is "two hundred twenty-eight million, eight hundred nine thousand, eight hundred sixty-six".