2291804 has 12 divisors (see below), whose sum is σ = 4246704. Its totient is φ = 1078464.

The previous prime is 2291803. The next prime is 2291827. The reversal of 2291804 is 4081922.

2291804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (26) 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 (2291801) by changing a digit.

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, 16784 + ... + 16919.

It is an arithmetic number, because the mean of its divisors is an integer number (353892).

2^2291804 is an apocalyptic number.

It is an amenable number.

2291804 is a deficient number, since it is larger than the sum of its proper divisors (1954900).

2291804 is a wasteful number, since it uses less digits than its factorization.

2291804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33724 (or 33722 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2291804 is about 1513.8705360763. The cubic root of 2291804 is about 131.8436317956.

The spelling of 2291804 in words is "two million, two hundred ninety-one thousand, eight hundred four".