2223744 has 32 divisors (see below), whose sum is σ = 5907840. Its totient is φ = 741120.

The previous prime is 2223743. The next prime is 2223757. The reversal of 2223744 is 4473222.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 2⁷ + 2⁹ + 2²¹ + 3¹⁰ + 7³ + 4⁵ + 4⁸ .

It is not an unprimeable number, because it can be changed into a prime (2223743) 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, 2512 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (184620).

2^2223744 is an apocalyptic number.

2223744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2223744 is an abundant number, since it is smaller than the sum of its proper divisors (3684096).

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

2223744 is an equidigital number, since it uses as much as digits as its factorization.

2223744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5808 (or 5796 counting only the distinct ones).

The product of its digits is 2688, while the sum is 24.

The square root of 2223744 is about 1491.2223174296. Note that the first 3 decimals coincide. The cubic root of 2223744 is about 130.5253690349.

Adding to 2223744 its reverse (4473222), we get a palindrome (6696966).

The spelling of 2223744 in words is "two million, two hundred twenty-three thousand, seven hundred forty-four".