168000000 has 280 divisors, whose sum is σ = 639366816. Its totient is φ = 38400000.

The previous prime is 167999999. The next prime is 168000061. The reversal of 168000000 is 861.

It is a tau number, because it is divible by the number of its divisors (280).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 23999997 + ... + 24000003.

Almost surely, 2^168000000 is an apocalyptic number.

168000000 is a gapful number since it is divisible by the number (10) 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 168000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319683408).

168000000 is an abundant number, since it is smaller than the sum of its proper divisors (471366816).

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

168000000 is an frugal number, since it uses more digits than its factorization.

168000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 168000000 is about 12961.4813968157. The cubic root of 168000000 is about 551.7848352762.

Adding to 168000000 its reverse (861), we get a palindrome (168000861).

The spelling of 168000000 in words is "one hundred sixty-eight million", and thus it is an aban number.