128084684 has 48 divisors (see below), whose sum is σ = 284798976. Its totient is φ = 49032000.

The previous prime is 128084669. The next prime is 128084699. The reversal of 128084684 is 486480821.

It is an interprime number because it is at equal distance from previous prime (128084669) and next prime (128084699).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5609 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (5933312).

Almost surely, 2^128084684 is an apocalyptic number.

128084684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128084684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142399488).

128084684 is an abundant number, since it is smaller than the sum of its proper divisors (156714292).

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

128084684 is a wasteful number, since it uses less digits than its factorization.

128084684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11406 (or 11404 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 128084684 is about 11317.4504195954. The cubic root of 128084684 is about 504.0795362426.

The spelling of 128084684 in words is "one hundred twenty-eight million, eighty-four thousand, six hundred eighty-four".