168978888 has 48 divisors (see below), whose sum is σ = 492857820. Its totient is φ = 51993216.

The previous prime is 168978883. The next prime is 168978899. The reversal of 168978888 is 888879861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 167495364 + 1483524 = 12942^2 + 1218^2 .

It is not an unprimeable number, because it can be changed into a prime (168978881) 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 11 ways as a sum of consecutive naturals, for example, 89331 + ... + 91202.

Almost surely, 2^168978888 is an apocalyptic number.

168978888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168978888 is an abundant number, since it is smaller than the sum of its proper divisors (323878932).

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

168978888 is a wasteful number, since it uses less digits than its factorization.

168978888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180558 (or 180551 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 63.

The square root of 168978888 is about 12999.1879746390. The cubic root of 168978888 is about 552.8544580238.

The spelling of 168978888 in words is "one hundred sixty-eight million, nine hundred seventy-eight thousand, eight hundred eighty-eight".