128380364 has 24 divisors (see below), whose sum is σ = 259650720. Its totient is φ = 54400896.

The previous prime is 128380289. The next prime is 128380381. The reversal of 128380364 is 463083821.

It is a happy 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 in 7 ways as a sum of consecutive naturals, for example, 23267 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (10818780).

Almost surely, 2^128380364 is an apocalyptic number.

128380364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128380364 is an abundant number, since it is smaller than the sum of its proper divisors (131270356).

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

128380364 is a wasteful number, since it uses less digits than its factorization.

128380364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51617 (or 51615 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 128380364 is about 11330.5059022093. The cubic root of 128380364 is about 504.4671227719.

The spelling of 128380364 in words is "one hundred twenty-eight million, three hundred eighty thousand, three hundred sixty-four".