128962936 has 8 divisors (see below), whose sum is σ = 241805520. Its totient is φ = 64481464.

The previous prime is 128962931. The next prime is 128962943. The reversal of 128962936 is 639269821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128962931) 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 as a sum of consecutive naturals, namely, 8060176 + ... + 8060191.

It is an arithmetic number, because the mean of its divisors is an integer number (30225690).

Almost surely, 2^128962936 is an apocalyptic number.

It is an amenable number.

128962936 is a deficient number, since it is larger than the sum of its proper divisors (112842584).

128962936 is a wasteful number, since it uses less digits than its factorization.

128962936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16120373 (or 16120369 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 128962936 is about 11356.1849227635. The cubic root of 128962936 is about 505.2290383469.

The spelling of 128962936 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, nine hundred thirty-six".