166875228 has 60 divisors (see below), whose sum is σ = 469813960. Its totient is φ = 51344928.

The previous prime is 166875223. The next prime is 166875253. The reversal of 166875228 is 822578661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166875221) 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 19 ways as a sum of consecutive naturals, for example, 15598 + ... + 24021.

Almost surely, 2^166875228 is an apocalyptic number.

166875228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166875228 is an abundant number, since it is smaller than the sum of its proper divisors (302938732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166875228 is a wasteful number, since it uses less digits than its factorization.

166875228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39648 (or 39637 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 166875228 is about 12918.0195076490. The cubic root of 166875228 is about 550.5506639144.

The spelling of 166875228 in words is "one hundred sixty-six million, eight hundred seventy-five thousand, two hundred twenty-eight".