128755795 has 32 divisors (see below), whose sum is σ = 186624000. Its totient is φ = 83400576.

The previous prime is 128755793. The next prime is 128755849. The reversal of 128755795 is 597557821.

It is not a de Polignac number, because 128755795 - 2¹ = 128755793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128755793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46356 + ... + 49054.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^128755795 is an apocalyptic number.

128755795 is a deficient number, since it is larger than the sum of its proper divisors (57868205).

128755795 is a wasteful number, since it uses less digits than its factorization.

128755795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787.

The product of its digits is 882000, while the sum is 49.

The square root of 128755795 is about 11347.0610732471. The cubic root of 128755795 is about 504.9583928077.

The spelling of 128755795 in words is "one hundred twenty-eight million, seven hundred fifty-five thousand, seven hundred ninety-five".