128977068 has 48 divisors (see below), whose sum is σ = 333889920. Its totient is φ = 38419200.

The previous prime is 128977061. The next prime is 128977097. The reversal of 128977068 is 860779821.

It is not an unprimeable number, because it can be changed into a prime (128977061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493 + ... + 16068.

It is an arithmetic number, because the mean of its divisors is an integer number (6956040).

Almost surely, 2^128977068 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 128977068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166944960).

128977068 is an abundant number, since it is smaller than the sum of its proper divisors (204912852).

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

128977068 is a wasteful number, since it uses less digits than its factorization.

128977068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16638 (or 16636 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 128977068 is about 11356.8071217222. The cubic root of 128977068 is about 505.2474923209.

The spelling of 128977068 in words is "one hundred twenty-eight million, nine hundred seventy-seven thousand, sixty-eight".