128868344 has 32 divisors (see below), whose sum is σ = 272689200. Its totient is φ = 56555520.

The previous prime is 128868343. The next prime is 128868349. The reversal of 128868344 is 443868821.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 128868295 and 128868304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128868343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22697 + ... + 27800.

Almost surely, 2^128868344 is an apocalyptic number.

It is an amenable number.

128868344 is an abundant number, since it is smaller than the sum of its proper divisors (143820856).

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

128868344 is a wasteful number, since it uses less digits than its factorization.

128868344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50543 (or 50539 counting only the distinct ones).

The product of its digits is 294912, while the sum is 44.

The square root of 128868344 is about 11352.0193798284. The cubic root of 128868344 is about 505.1054826547.

The spelling of 128868344 in words is "one hundred twenty-eight million, eight hundred sixty-eight thousand, three hundred forty-four".