166235228 has 12 divisors (see below), whose sum is σ = 298774392. Its totient is φ = 80871120.

The previous prime is 166235227. The next prime is 166235249. The reversal of 166235228 is 822532661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166235227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561458 + ... + 561753.

It is an arithmetic number, because the mean of its divisors is an integer number (24897866).

Almost surely, 2^166235228 is an apocalyptic number.

It is an amenable number.

166235228 is a deficient number, since it is larger than the sum of its proper divisors (132539164).

166235228 is a wasteful number, since it uses less digits than its factorization.

166235228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123252 (or 1123250 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 166235228 is about 12893.2241119124. The cubic root of 166235228 is about 549.8459381166.

Adding to 166235228 its reverse (822532661), we get a palindrome (988767889).

The spelling of 166235228 in words is "one hundred sixty-six million, two hundred thirty-five thousand, two hundred twenty-eight".