166528 has 16 divisors (see below), whose sum is σ = 332010. Its totient is φ = 83200.

The previous prime is 166487. The next prime is 166541. The reversal of 166528 is 825661.

It can be written as a sum of positive squares in only one way, i.e., 166464 + 64 = 408^2 + 8^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 166496 and 166505.

It is an unprimeable 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, 523 + ... + 778.

2¹⁶⁶⁵²⁸ is an apocalyptic number.

It is an amenable number.

166528 is a deficient number, since it is larger than the sum of its proper divisors (165482).

166528 is an equidigital number, since it uses as much as digits as its factorization.

166528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1303 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 166528 is about 408.0784238354. The cubic root of 166528 is about 55.0168543387.

The spelling of 166528 in words is "one hundred sixty-six thousand, five hundred twenty-eight".