128673955 has 16 divisors (see below), whose sum is σ = 156657600. Its totient is φ = 101450880.

The previous prime is 128673953. The next prime is 128673991. The reversal of 128673955 is 559376821.

It is not a de Polignac number, because 128673955 - 2¹ = 128673953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128673953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124290 + ... + 125320.

It is an arithmetic number, because the mean of its divisors is an integer number (9791100).

Almost surely, 2^128673955 is an apocalyptic number.

128673955 is a deficient number, since it is larger than the sum of its proper divisors (27983645).

128673955 is a wasteful number, since it uses less digits than its factorization.

128673955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

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

The square root of 128673955 is about 11343.4542798920. The cubic root of 128673955 is about 504.8513825981.

The spelling of 128673955 in words is "one hundred twenty-eight million, six hundred seventy-three thousand, nine hundred fifty-five".