166435434 has 48 divisors (see below), whose sum is σ = 397260864. Its totient is φ = 49939200.

The previous prime is 166435417. The next prime is 166435447. The reversal of 166435434 is 434534661.

166435434 is a `hidden beast` number, since 1 + 6 + 643 + 5 + 4 + 3 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16314 + ... + 24474.

It is an arithmetic number, because the mean of its divisors is an integer number (8276268).

Almost surely, 2^166435434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166435434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198630432).

166435434 is an abundant number, since it is smaller than the sum of its proper divisors (230825430).

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

166435434 is a wasteful number, since it uses less digits than its factorization.

166435434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283 (or 8280 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 166435434 is about 12900.9857762886. The cubic root of 166435434 is about 550.0665858778.

It can be divided in two parts, 166 and 435434, that added together give a square (435600 = 660²).

The spelling of 166435434 in words is "one hundred sixty-six million, four hundred thirty-five thousand, four hundred thirty-four".