166842672 has 20 divisors (see below), whose sum is σ = 431010360. Its totient is φ = 55614208.

The previous prime is 166842671. The next prime is 166842719. The reversal of 166842672 is 276248661.

It is not an unprimeable number, because it can be changed into a prime (166842671) 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, 1737897 + ... + 1737992.

It is an arithmetic number, because the mean of its divisors is an integer number (21550518).

Almost surely, 2^166842672 is an apocalyptic number.

166842672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166842672 is an abundant number, since it is smaller than the sum of its proper divisors (264167688).

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

166842672 is a wasteful number, since it uses less digits than its factorization.

166842672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475900 (or 3475894 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 166842672 is about 12916.7593459041. The cubic root of 166842672 is about 550.5148589333.

The spelling of 166842672 in words is "one hundred sixty-six million, eight hundred forty-two thousand, six hundred seventy-two".