228355666 has 32 divisors (see below), whose sum is σ = 431879040. Its totient is φ = 87964800.

The previous prime is 228355651. The next prime is 228355669. The reversal of 228355666 is 666553822.

It is a happy number.

It is a super-3 number, since 3×228355666³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (228355669) 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, 5376 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (13496220).

Almost surely, 2^228355666 is an apocalyptic number.

228355666 is a deficient number, since it is larger than the sum of its proper divisors (203523374).

228355666 is a wasteful number, since it uses less digits than its factorization.

228355666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770.

The product of its digits is 518400, while the sum is 43.

The square root of 228355666 is about 15111.4415592954. The cubic root of 228355666 is about 611.2289708572.

The spelling of 228355666 in words is "two hundred twenty-eight million, three hundred fifty-five thousand, six hundred sixty-six".