128673071 has 8 divisors (see below), whose sum is σ = 132363264. Its totient is φ = 125014680.

The previous prime is 128673049. The next prime is 128673101. The reversal of 128673071 is 170376821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128673071 - 2²⁶ = 61564207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128673011) 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 7 ways as a sum of consecutive naturals, for example, 380 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (16545408).

Almost surely, 2^128673071 is an apocalyptic number.

128673071 is a deficient number, since it is larger than the sum of its proper divisors (3690193).

128673071 is a wasteful number, since it uses less digits than its factorization.

128673071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 128673071 is about 11343.4153146220. The cubic root of 128673071 is about 504.8502264728.

The spelling of 128673071 in words is "one hundred twenty-eight million, six hundred seventy-three thousand, seventy-one".