1724223 has 4 divisors (see below), whose sum is σ = 2298968. Its totient is φ = 1149480.

The previous prime is 1724221. The next prime is 1724227. The reversal of 1724223 is 3224271.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1724223 - 2¹ = 1724221 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1724223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1724221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287368 + ... + 287373.

It is an arithmetic number, because the mean of its divisors is an integer number (574742).

2^1724223 is an apocalyptic number.

1724223 is a deficient number, since it is larger than the sum of its proper divisors (574745).

1724223 is an equidigital number, since it uses as much as digits as its factorization.

1724223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574744.

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

The square root of 1724223 is about 1313.0967214947. The cubic root of 1724223 is about 119.9125056661.

Adding to 1724223 its reverse (3224271), we get a palindrome (4948494).

The spelling of 1724223 in words is "one million, seven hundred twenty-four thousand, two hundred twenty-three".