166271228 has 12 divisors (see below), whose sum is σ = 300361152. Its totient is φ = 80453760.

The previous prime is 166271227. The next prime is 166271233. The reversal of 166271228 is 822172661.

It is a super-2 number, since 2×166271228² = 55292242521255968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166271227) 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, 670325 + ... + 670572.

It is an arithmetic number, because the mean of its divisors is an integer number (25030096).

Almost surely, 2^166271228 is an apocalyptic number.

It is an amenable number.

166271228 is a deficient number, since it is larger than the sum of its proper divisors (134089924).

166271228 is a wasteful number, since it uses less digits than its factorization.

166271228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340932 (or 1340930 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 166271228 is about 12894.6201184835. The cubic root of 166271228 is about 549.8856269063.

The spelling of 166271228 in words is "one hundred sixty-six million, two hundred seventy-one thousand, two hundred twenty-eight".