128546368 has 42 divisors (see below), whose sum is σ = 259930646. Its totient is φ = 63074304.

The previous prime is 128546347. The next prime is 128546371. The reversal of 128546368 is 863645821.

It can be written as a sum of positive squares in only one way, i.e., 128323584 + 222784 = 11328^2 + 472^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222496 + ... + 223072.

Almost surely, 2^128546368 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 128546368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129965323).

128546368 is an abundant number, since it is smaller than the sum of its proper divisors (131384278).

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

128546368 is an frugal number, since it uses more digits than its factorization.

128546368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 638 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 128546368 is about 11337.8290690943. The cubic root of 128546368 is about 504.6844651762.

The spelling of 128546368 in words is "one hundred twenty-eight million, five hundred forty-six thousand, three hundred sixty-eight".