128955673 has 16 divisors (see below), whose sum is σ = 162054144. Its totient is φ = 99686160.

The previous prime is 128955653. The next prime is 128955683. The reversal of 128955673 is 376559821.

It is not a de Polignac number, because 128955673 - 2⁹ = 128955161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128955653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3186 + ... + 16372.

It is an arithmetic number, because the mean of its divisors is an integer number (10128384).

Almost surely, 2^128955673 is an apocalyptic number.

It is an amenable number.

128955673 is a deficient number, since it is larger than the sum of its proper divisors (33098471).

128955673 is a wasteful number, since it uses less digits than its factorization.

128955673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13332.

The product of its digits is 453600, while the sum is 46.

The square root of 128955673 is about 11355.8651365715. The cubic root of 128955673 is about 505.2195535872.

The spelling of 128955673 in words is "one hundred twenty-eight million, nine hundred fifty-five thousand, six hundred seventy-three".