166317328 has 20 divisors (see below), whose sum is σ = 323101840. Its totient is φ = 82936224.

The previous prime is 166317299. The next prime is 166317329. The reversal of 166317328 is 823713661.

It is a super-2 number, since 2×166317328² = 55322907186119168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166317329) 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, 7650 + ... + 19777.

It is an arithmetic number, because the mean of its divisors is an integer number (16155092).

Almost surely, 2^166317328 is an apocalyptic number.

It is an amenable number.

166317328 is a deficient number, since it is larger than the sum of its proper divisors (156784512).

166317328 is a wasteful number, since it uses less digits than its factorization.

166317328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27814 (or 27808 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 166317328 is about 12896.4075617980. The cubic root of 166317328 is about 549.9364422424.

The spelling of 166317328 in words is "one hundred sixty-six million, three hundred seventeen thousand, three hundred twenty-eight".