168231798 has 72 divisors (see below), whose sum is σ = 442501488. Its totient is φ = 45970848.

The previous prime is 168231797. The next prime is 168231827. The reversal of 168231798 is 897132861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168231797) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16140 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (6145854).

Almost surely, 2^168231798 is an apocalyptic number.

168231798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168231798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221250744).

168231798 is an abundant number, since it is smaller than the sum of its proper divisors (274269690).

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

168231798 is a wasteful number, since it uses less digits than its factorization.

168231798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338 (or 8328 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 168231798 is about 12970.4201165575. The cubic root of 168231798 is about 552.0384936924.

The spelling of 168231798 in words is "one hundred sixty-eight million, two hundred thirty-one thousand, seven hundred ninety-eight".