168239808 has 224 divisors, whose sum is σ = 553029120. Its totient is φ = 49720320.

The previous prime is 168239801. The next prime is 168239809. The reversal of 168239808 is 808932861.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168239801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007341 + ... + 1007507.

It is an arithmetic number, because the mean of its divisors is an integer number (2468880).

Almost surely, 2^168239808 is an apocalyptic number.

168239808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168239808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276514560).

168239808 is an abundant number, since it is smaller than the sum of its proper divisors (384789312).

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

168239808 is a wasteful number, since it uses less digits than its factorization.

168239808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 168239808 is about 12970.7288923946. The cubic root of 168239808 is about 552.0472549337.

The spelling of 168239808 in words is "one hundred sixty-eight million, two hundred thirty-nine thousand, eight hundred eight".