2173224 has 64 divisors (see below), whose sum is σ = 5898240. Its totient is φ = 665280.

The previous prime is 2173219. The next prime is 2173243. The reversal of 2173224 is 4223712.

It is a self number, because there is not a number n which added to its sum of digits gives 2173224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17049 + ... + 17175.

It is an arithmetic number, because the mean of its divisors is an integer number (92160).

2^2173224 is an apocalyptic number.

2173224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2949120).

2173224 is an abundant number, since it is smaller than the sum of its proper divisors (3725016).

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

2173224 is a wasteful number, since it uses less digits than its factorization.

2173224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 186 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 2173224 is about 1474.1858770182. The cubic root of 2173224 is about 129.5293434398.

Adding to 2173224 its reverse (4223712), we get a palindrome (6396936).

The spelling of 2173224 in words is "two million, one hundred seventy-three thousand, two hundred twenty-four".