128034856 has 32 divisors (see below), whose sum is σ = 248300640. Its totient is φ = 61858368.

The previous prime is 128034853. The next prime is 128034883. The reversal of 128034856 is 658430821.

It is a happy 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26155 + ... + 30661.

It is an arithmetic number, because the mean of its divisors is an integer number (7759395).

Almost surely, 2^128034856 is an apocalyptic number.

It is an amenable number.

128034856 is a deficient number, since it is larger than the sum of its proper divisors (120265784).

128034856 is a wasteful number, since it uses less digits than its factorization.

128034856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 4629 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 128034856 is about 11315.2488262521. The cubic root of 128034856 is about 504.0141614397.

The spelling of 128034856 in words is "one hundred twenty-eight million, thirty-four thousand, eight hundred fifty-six".