2081784 has 32 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 687456.

The previous prime is 2081777. The next prime is 2081797. The reversal of 2081784 is 4871802.

It is a zygodrome in base 2.

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, 2707 + ... + 3389.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^2081784 is an apocalyptic number.

2081784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2081784 is an abundant number, since it is smaller than the sum of its proper divisors (3171336).

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

2081784 is a wasteful number, since it uses less digits than its factorization.

2081784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2081784 is about 1442.8388683425. The cubic root of 2081784 is about 127.6865703807.

The spelling of 2081784 in words is "two million, eighty-one thousand, seven hundred eighty-four".