128704824 has 96 divisors (see below), whose sum is σ = 374531040. Its totient is φ = 39782400.

The previous prime is 128704819. The next prime is 128704831. The reversal of 128704824 is 428407821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86164 + ... + 87644.

It is an arithmetic number, because the mean of its divisors is an integer number (3901365).

Almost surely, 2^128704824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128704824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187265520).

128704824 is an abundant number, since it is smaller than the sum of its proper divisors (245826216).

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

128704824 is a wasteful number, since it uses less digits than its factorization.

128704824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 128704824 is about 11344.8148508471. The cubic root of 128704824 is about 504.8917508070.

The spelling of 128704824 in words is "one hundred twenty-eight million, seven hundred four thousand, eight hundred twenty-four".