168442836 has 24 divisors (see below), whose sum is σ = 393712704. Its totient is φ = 56050560.

The previous prime is 168442831. The next prime is 168442843. The reversal of 168442836 is 638244861.

168442836 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168442831) 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 7 ways as a sum of consecutive naturals, for example, 4720 + ... + 18951.

It is an arithmetic number, because the mean of its divisors is an integer number (16404696).

Almost surely, 2^168442836 is an apocalyptic number.

It is an amenable number.

168442836 is an abundant number, since it is smaller than the sum of its proper divisors (225269868).

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

168442836 is a wasteful number, since it uses less digits than its factorization.

168442836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24271 (or 24269 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 168442836 is about 12978.5529239588. The cubic root of 168442836 is about 552.2692317179.

The spelling of 168442836 in words is "one hundred sixty-eight million, four hundred forty-two thousand, eight hundred thirty-six".