2806804 has 48 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 1008000.

The previous prime is 2806801. The next prime is 2806829. The reversal of 2806804 is 4086082.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3654 + ... + 4354.

It is an arithmetic number, because the mean of its divisors is an integer number (137592).

2^2806804 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 2806804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3302208).

2806804 is an abundant number, since it is smaller than the sum of its proper divisors (3797612).

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

2806804 is a wasteful number, since it uses less digits than its factorization.

2806804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2806804 is about 1675.3519033326. The cubic root of 2806804 is about 141.0600485307.

The spelling of 2806804 in words is "two million, eight hundred six thousand, eight hundred four".