1808224 has 36 divisors (see below), whose sum is σ = 3921372. Its totient is φ = 820160.

The previous prime is 1808207. The next prime is 1808243. The reversal of 1808224 is 4228081.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3639 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (108927).

2^1808224 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 1808224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960686).

1808224 is an abundant number, since it is smaller than the sum of its proper divisors (2113148).

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

1808224 is a wasteful number, since it uses less digits than its factorization.

1808224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1808224 is about 1344.7021975144. The cubic root of 1808224 is about 121.8290178497.

The spelling of 1808224 in words is "one million, eight hundred eight thousand, two hundred twenty-four".