2289804 has 72 divisors (see below), whose sum is σ = 6256320. Its totient is φ = 649440.

The previous prime is 2289803. The next prime is 2289817. The reversal of 2289804 is 4089822.

2289804 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27547 + ... + 27629.

2^2289804 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 2289804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3128160).

2289804 is an abundant number, since it is smaller than the sum of its proper divisors (3966516).

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

2289804 is a wasteful number, since it uses less digits than its factorization.

2289804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 2289804 is about 1513.2098334336. The cubic root of 2289804 is about 131.8052684212.

The spelling of 2289804 in words is "two million, two hundred eighty-nine thousand, eight hundred four".