128044984 has 8 divisors (see below), whose sum is σ = 240084360. Its totient is φ = 64022488.

The previous prime is 128044981. The next prime is 128044991. The reversal of 128044984 is 489440821.

It is a happy number.

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 (128044981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8002804 + ... + 8002819.

It is an arithmetic number, because the mean of its divisors is an integer number (30010545).

Almost surely, 2^128044984 is an apocalyptic number.

It is an amenable number.

128044984 is a deficient number, since it is larger than the sum of its proper divisors (112039376).

128044984 is a wasteful number, since it uses less digits than its factorization.

128044984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16005629 (or 16005625 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 128044984 is about 11315.6963550636. The cubic root of 128044984 is about 504.0274508438.

It can be divided in two parts, 1280 and 44984, that added together give a palindrome (46264).

The spelling of 128044984 in words is "one hundred twenty-eight million, forty-four thousand, nine hundred eighty-four".