166928 has 10 divisors (see below), whose sum is σ = 323454. Its totient is φ = 83456.

The previous prime is 166919. The next prime is 166931. The reversal of 166928 is 829661.

It can be written as a sum of positive squares in only one way, i.e., 150544 + 16384 = 388^2 + 128^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166894 and 166903.

It is an unprimeable number.

166928 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201 + ... + 5232.

2¹⁶⁶⁹²⁸ is an apocalyptic number.

It is an amenable number.

166928 is a deficient number, since it is larger than the sum of its proper divisors (156526).

166928 is a wasteful number, since it uses less digits than its factorization.

166928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441 (or 10435 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 166928 is about 408.5682317557. The cubic root of 166928 is about 55.0608692494.

The spelling of 166928 in words is "one hundred sixty-six thousand, nine hundred twenty-eight".