166406132 has 24 divisors (see below), whose sum is σ = 314907264. Its totient is φ = 76641152.

The previous prime is 166406129. The next prime is 166406143. The reversal of 166406132 is 231604661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 166406095 and 166406104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22838 + ... + 29229.

It is an arithmetic number, because the mean of its divisors is an integer number (13121136).

Almost surely, 2^166406132 is an apocalyptic number.

It is an amenable number.

166406132 is a deficient number, since it is larger than the sum of its proper divisors (148501132).

166406132 is a wasteful number, since it uses less digits than its factorization.

166406132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52135 (or 52133 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 166406132 is about 12899.8500766482. The cubic root of 166406132 is about 550.0343030947.

The spelling of 166406132 in words is "one hundred sixty-six million, four hundred six thousand, one hundred thirty-two".