166589228 has 12 divisors (see below), whose sum is σ = 313956720. Its totient is φ = 76887312.

The previous prime is 166589219. The next prime is 166589243. The reversal of 166589228 is 822985661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601768 + ... + 1601871.

It is an arithmetic number, because the mean of its divisors is an integer number (26163060).

Almost surely, 2^166589228 is an apocalyptic number.

It is an amenable number.

166589228 is a deficient number, since it is larger than the sum of its proper divisors (147367492).

166589228 is a wasteful number, since it uses less digits than its factorization.

166589228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203656 (or 3203654 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 166589228 is about 12906.9449522340. The cubic root of 166589228 is about 550.2359626640.

The spelling of 166589228 in words is "one hundred sixty-six million, five hundred eighty-nine thousand, two hundred twenty-eight".