128034855 has 48 divisors (see below), whose sum is σ = 247272480. Its totient is φ = 60850944.

The previous prime is 128034853. The next prime is 128034883. The reversal of 128034855 is 558430821.

It is a happy number.

It is not a de Polignac number, because 128034855 - 2¹ = 128034853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128034853) 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 47 ways as a sum of consecutive naturals, for example, 13192 + ... + 20738.

It is an arithmetic number, because the mean of its divisors is an integer number (5151510).

Almost surely, 2^128034855 is an apocalyptic number.

128034855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128034855 is a deficient number, since it is larger than the sum of its proper divisors (119237625).

128034855 is a wasteful number, since it uses less digits than its factorization.

128034855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600 (or 7597 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 128034855 is about 11315.2487820640. The cubic root of 128034855 is about 504.0141601275.

The spelling of 128034855 in words is "one hundred twenty-eight million, thirty-four thousand, eight hundred fifty-five".