168840378 has 192 divisors, whose sum is σ = 471744000. Its totient is φ = 43464960.

The previous prime is 168840341. The next prime is 168840383. The reversal of 168840378 is 873048861.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4118038 + ... + 4118078.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^168840378 is an apocalyptic number.

168840378 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 168840378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235872000).

168840378 is an abundant number, since it is smaller than the sum of its proper divisors (302903622).

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

168840378 is a wasteful number, since it uses less digits than its factorization.

168840378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 168840378 is about 12993.8592419650. The cubic root of 168840378 is about 552.7033606407.

The spelling of 168840378 in words is "one hundred sixty-eight million, eight hundred forty thousand, three hundred seventy-eight".