2128984 has 32 divisors (see below), whose sum is σ = 4692240. Its totient is φ = 892800.

The previous prime is 2128963. The next prime is 2128991. The reversal of 2128984 is 4898212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214 + ... + 2074.

2^2128984 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 2128984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2346120).

2128984 is an abundant number, since it is smaller than the sum of its proper divisors (2563256).

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

2128984 is a wasteful number, since it uses less digits than its factorization.

With its successor (2128985) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1887).

2128984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1887 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 2128984 is about 1459.1038345505. The cubic root of 2128984 is about 128.6443743614.

The spelling of 2128984 in words is "two million, one hundred twenty-eight thousand, nine hundred eighty-four".