2181084 has 12 divisors (see below), whose sum is σ = 5089224. Its totient is φ = 727024.

The previous prime is 2181079. The next prime is 2181097. The reversal of 2181084 is 4801812.

2181084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90867 + ... + 90890.

It is an arithmetic number, because the mean of its divisors is an integer number (424102).

2^2181084 is an apocalyptic number.

It is an amenable number.

2181084 is an abundant number, since it is smaller than the sum of its proper divisors (2908140).

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

2181084 is a wasteful number, since it uses less digits than its factorization.

2181084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181764 (or 181762 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 2181084 is about 1476.8493491213. The cubic root of 2181084 is about 129.6853138161.

Adding to 2181084 its reverse (4801812), we get a palindrome (6982896).

The spelling of 2181084 in words is "two million, one hundred eighty-one thousand, eighty-four".