128877960 has 32 divisors (see below), whose sum is σ = 386634240. Its totient is φ = 34367424.

The previous prime is 128877941. The next prime is 128877961. The reversal of 128877960 is 69778821.

It is not an unprimeable number, because it can be changed into a prime (128877961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 536872 + ... + 537111.

It is an arithmetic number, because the mean of its divisors is an integer number (12082320).

Almost surely, 2^128877960 is an apocalyptic number.

128877960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128877960 is an abundant number, since it is smaller than the sum of its proper divisors (257756280).

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

128877960 is a wasteful number, since it uses less digits than its factorization.

128877960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073997 (or 1073993 counting only the distinct ones).

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

The square root of 128877960 is about 11352.4429089073. The cubic root of 128877960 is about 505.1180457957.

The spelling of 128877960 in words is "one hundred twenty-eight million, eight hundred seventy-seven thousand, nine hundred sixty".