168881808 has 80 divisors (see below), whose sum is σ = 468987840. Its totient is φ = 52174848.

The previous prime is 168881773. The next prime is 168881809. The reversal of 168881808 is 808188861.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (168881809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53128 + ... + 56216.

It is an arithmetic number, because the mean of its divisors is an integer number (5862348).

Almost surely, 2^168881808 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 168881808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234493920).

168881808 is an abundant number, since it is smaller than the sum of its proper divisors (300106032).

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

168881808 is a wasteful number, since it uses less digits than its factorization.

168881808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 48.

The square root of 168881808 is about 12995.4533587713. The cubic root of 168881808 is about 552.7485643371.

The spelling of 168881808 in words is "one hundred sixty-eight million, eight hundred eighty-one thousand, eight hundred eight".