128677443 has 32 divisors (see below), whose sum is σ = 184800000. Its totient is φ = 79408512.

The previous prime is 128677441. The next prime is 128677459. The reversal of 128677443 is 344776821.

It is not a de Polignac number, because 128677443 - 2¹ = 128677441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128677395 and 128677404.

It is not an unprimeable number, because it can be changed into a prime (128677441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863533 + ... + 863681.

It is an arithmetic number, because the mean of its divisors is an integer number (5775000).

Almost surely, 2^128677443 is an apocalyptic number.

128677443 is a deficient number, since it is larger than the sum of its proper divisors (56122557).

128677443 is a wasteful number, since it uses less digits than its factorization.

128677443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419.

The product of its digits is 225792, while the sum is 42.

The square root of 128677443 is about 11343.6080239049. The cubic root of 128677443 is about 504.8559442716.

The spelling of 128677443 in words is "one hundred twenty-eight million, six hundred seventy-seven thousand, four hundred forty-three".