128766964 has 6 divisors (see below), whose sum is σ = 225342194. Its totient is φ = 64383480.

The previous prime is 128766943. The next prime is 128766973. The reversal of 128766964 is 469667821.

It can be written as a sum of positive squares in only one way, i.e., 98604900 + 30162064 = 9930^2 + 5492^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 16095867 + ... + 16095874.

Almost surely, 2^128766964 is an apocalyptic number.

It is an amenable number.

128766964 is a deficient number, since it is larger than the sum of its proper divisors (96575230).

128766964 is a wasteful number, since it uses less digits than its factorization.

128766964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32191745 (or 32191743 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 128766964 is about 11347.5532164427. The cubic root of 128766964 is about 504.9729933602.

The spelling of 128766964 in words is "one hundred twenty-eight million, seven hundred sixty-six thousand, nine hundred sixty-four".