128449676 has 12 divisors (see below), whose sum is σ = 224866320. Its totient is φ = 64202160.

The previous prime is 128449669. The next prime is 128449723. The reversal of 128449676 is 676944821.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 128449676.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18986 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (18738860).

Almost surely, 2^128449676 is an apocalyptic number.

It is an amenable number.

128449676 is a deficient number, since it is larger than the sum of its proper divisors (96416644).

128449676 is a wasteful number, since it uses less digits than its factorization.

128449676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11344 (or 11342 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 128449676 is about 11333.5641349048. The cubic root of 128449676 is about 504.5578929734.

The spelling of 128449676 in words is "one hundred twenty-eight million, four hundred forty-nine thousand, six hundred seventy-six".