2111984 has 40 divisors (see below), whose sum is σ = 4746720. Its totient is φ = 891648.

The previous prime is 2111971. The next prime is 2112007. The reversal of 2111984 is 4891112.

It is an Ulam number.

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, 12122 + ... + 12294.

It is an arithmetic number, because the mean of its divisors is an integer number (118668).

2^2111984 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 2111984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373360).

2111984 is an abundant number, since it is smaller than the sum of its proper divisors (2634736).

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

2111984 is a wasteful number, since it uses less digits than its factorization.

2111984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 291 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 2111984 is about 1453.2666651375. The cubic root of 2111984 is about 128.3010492056.

The spelling of 2111984 in words is "two million, one hundred eleven thousand, nine hundred eighty-four".