128423884 has 24 divisors (see below), whose sum is σ = 229723200. Its totient is φ = 62800080.

The previous prime is 128423857. The next prime is 128423891. The reversal of 128423884 is 488324821.

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, 48507 + ... + 51085.

It is an arithmetic number, because the mean of its divisors is an integer number (9571800).

Almost surely, 2^128423884 is an apocalyptic number.

It is an amenable number.

128423884 is a deficient number, since it is larger than the sum of its proper divisors (101299316).

128423884 is a wasteful number, since it uses less digits than its factorization.

128423884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853 (or 2851 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The square root of 128423884 is about 11332.4262185994. The cubic root of 128423884 is about 504.5241198811.

The spelling of 128423884 in words is "one hundred twenty-eight million, four hundred twenty-three thousand, eight hundred eighty-four".