128011336 has 16 divisors (see below), whose sum is σ = 248298300. Its totient is φ = 61798464.

The previous prime is 128011321. The next prime is 128011337. The reversal of 128011336 is 633110821.

It can be written as a sum of positive squares in 2 ways, for example, as 121220100 + 6791236 = 11010^2 + 2606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128011336.

It is not an unprimeable number, because it can be changed into a prime (128011337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275655 + ... + 276118.

Almost surely, 2^128011336 is an apocalyptic number.

It is an amenable number.

128011336 is a deficient number, since it is larger than the sum of its proper divisors (120286964).

128011336 is a wasteful number, since it uses less digits than its factorization.

128011336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551808 (or 551804 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 128011336 is about 11314.2094730476. The cubic root of 128011336 is about 503.9832970865.

The spelling of 128011336 in words is "one hundred twenty-eight million, eleven thousand, three hundred thirty-six".