2805684 has 48 divisors (see below), whose sum is σ = 7569408. Its totient is φ = 792288.

The previous prime is 2805683. The next prime is 2805689. The reversal of 2805684 is 4865082.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10537 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (157696).

2^2805684 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 2805684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3784704).

2805684 is an abundant number, since it is smaller than the sum of its proper divisors (4763724).

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

2805684 is a wasteful number, since it uses less digits than its factorization.

2805684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 2805684 is about 1675.0176118477. The cubic root of 2805684 is about 141.0412836208.

The spelling of 2805684 in words is "two million, eight hundred five thousand, six hundred eighty-four".