166428364 has 12 divisors (see below), whose sum is σ = 291388104. Its totient is φ = 83174624.

The previous prime is 166428347. The next prime is 166428377. The reversal of 166428364 is 463824661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879 + ... + 18265.

It is an arithmetic number, because the mean of its divisors is an integer number (24282342).

Almost surely, 2^166428364 is an apocalyptic number.

It is an amenable number.

166428364 is a deficient number, since it is larger than the sum of its proper divisors (124959740).

166428364 is a wasteful number, since it uses less digits than its factorization.

166428364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784 (or 19782 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 166428364 is about 12900.7117633098. The cubic root of 166428364 is about 550.0587970199.

The spelling of 166428364 in words is "one hundred sixty-six million, four hundred twenty-eight thousand, three hundred sixty-four".