128373868 has 72 divisors (see below), whose sum is σ = 280814688. Its totient is φ = 50125824.

The previous prime is 128373863. The next prime is 128373871. The reversal of 128373868 is 868373821.

It is not an unprimeable number, because it can be changed into a prime (128373863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651546 + ... + 651742.

It is an arithmetic number, because the mean of its divisors is an integer number (3900204).

Almost surely, 2^128373868 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 128373868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140407344).

128373868 is an abundant number, since it is smaller than the sum of its proper divisors (152440820).

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

128373868 is a wasteful number, since it uses less digits than its factorization.

128373868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 260 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 128373868 is about 11330.2192388321. The cubic root of 128373868 is about 504.4586140104.

The spelling of 128373868 in words is "one hundred twenty-eight million, three hundred seventy-three thousand, eight hundred sixty-eight".