128520168 has 64 divisors (see below), whose sum is σ = 373249920. Its totient is φ = 36115200.

The previous prime is 128520149. The next prime is 128520169. The reversal of 128520168 is 861025821.

It is not an unprimeable number, because it can be changed into a prime (128520169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3978 + ... + 16518.

It is an arithmetic number, because the mean of its divisors is an integer number (5832030).

Almost surely, 2^128520168 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 128520168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186624960).

128520168 is an abundant number, since it is smaller than the sum of its proper divisors (244729752).

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

128520168 is a wasteful number, since it uses less digits than its factorization.

128520168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12618 (or 12614 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 128520168 is about 11336.6735861980. The cubic root of 128520168 is about 504.6501750036.

Adding to 128520168 its reverse (861025821), we get a palindrome (989545989).

The spelling of 128520168 in words is "one hundred twenty-eight million, five hundred twenty thousand, one hundred sixty-eight".