128110755 has 32 divisors (see below), whose sum is σ = 213239808. Its totient is φ = 65606400.

The previous prime is 128110751. The next prime is 128110757. The reversal of 128110755 is 557011821.

It is not a de Polignac number, because 128110755 - 2² = 128110751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128110751) 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 31 ways as a sum of consecutive naturals, for example, 62700 + ... + 64710.

It is an arithmetic number, because the mean of its divisors is an integer number (6663744).

Almost surely, 2^128110755 is an apocalyptic number.

128110755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128110755 is a deficient number, since it is larger than the sum of its proper divisors (85129053).

128110755 is a wasteful number, since it uses less digits than its factorization.

128110755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187.

The product of its (nonzero) digits is 2800, while the sum is 30.

The square root of 128110755 is about 11318.6021663455. The cubic root of 128110755 is about 504.1137348827.

The spelling of 128110755 in words is "one hundred twenty-eight million, one hundred ten thousand, seven hundred fifty-five".