128364012 has 72 divisors (see below), whose sum is σ = 386969856. Its totient is φ = 35079264.

The previous prime is 128364011. The next prime is 128364017. The reversal of 128364012 is 210463821.

128364012 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 640 + 12 = 666.

It is a super-2 number, since 2×128364012² = 32954639153472288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128364011) 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 in 23 ways as a sum of consecutive naturals, for example, 5278 + ... + 16869.

Almost surely, 2^128364012 is an apocalyptic number.

128364012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128364012 is an abundant number, since it is smaller than the sum of its proper divisors (258605844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128364012 is a wasteful number, since it uses less digits than its factorization.

128364012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187 (or 22182 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 128364012 is about 11329.7842874434. The cubic root of 128364012 is about 504.4457036172.

The spelling of 128364012 in words is "one hundred twenty-eight million, three hundred sixty-four thousand, twelve".