2243744 has 12 divisors (see below), whose sum is σ = 4417434. Its totient is φ = 1121856.

The previous prime is 2243743. The next prime is 2243753. The reversal of 2243744 is 4473422.

It can be written as a sum of positive squares in only one way, i.e., 1993744 + 250000 = 1412^2 + 500^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2243741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35027 + ... + 35090.

2^2243744 is an apocalyptic number.

It is an amenable number.

2243744 is a deficient number, since it is larger than the sum of its proper divisors (2173690).

2243744 is an equidigital number, since it uses as much as digits as its factorization.

2243744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70127 (or 70119 counting only the distinct ones).

The product of its digits is 5376, while the sum is 26.

The square root of 2243744 is about 1497.9132151096. The cubic root of 2243744 is about 130.9155098798.

The spelling of 2243744 in words is "two million, two hundred forty-three thousand, seven hundred forty-four".