168891712 has 56 divisors (see below), whose sum is σ = 368686080. Its totient is φ = 76124160.

The previous prime is 168891683. The next prime is 168891713. The reversal of 168891712 is 217198861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168891713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88464 + ... + 90352.

It is an arithmetic number, because the mean of its divisors is an integer number (6583680).

Almost surely, 2^168891712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168891712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184343040).

168891712 is an abundant number, since it is smaller than the sum of its proper divisors (199794368).

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

168891712 is a wasteful number, since it uses less digits than its factorization.

168891712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039 (or 2029 counting only the distinct ones).

The product of its digits is 48384, while the sum is 43.

The square root of 168891712 is about 12995.8344095329. The cubic root of 168891712 is about 552.7593693587.

The spelling of 168891712 in words is "one hundred sixty-eight million, eight hundred ninety-one thousand, seven hundred twelve".