128256104 has 32 divisors (see below), whose sum is σ = 244944000. Its totient is φ = 62946240.

The previous prime is 128256101. The next prime is 128256173. The reversal of 128256104 is 401652821.

It is not an unprimeable number, because it can be changed into a prime (128256101) 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, 197909 + ... + 198555.

It is an arithmetic number, because the mean of its divisors is an integer number (7654500).

Almost surely, 2^128256104 is an apocalyptic number.

It is an amenable number.

128256104 is a deficient number, since it is larger than the sum of its proper divisors (116687896).

128256104 is a wasteful number, since it uses less digits than its factorization.

128256104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 128256104 is about 11325.0211478831. The cubic root of 128256104 is about 504.3043114769.

The spelling of 128256104 in words is "one hundred twenty-eight million, two hundred fifty-six thousand, one hundred four".