2243740 has 24 divisors (see below), whose sum is σ = 4823280. Its totient is φ = 876288.

The previous prime is 2243723. The next prime is 2243741. The reversal of 2243740 is 473422.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 2164.

It is an arithmetic number, because the mean of its divisors is an integer number (200970).

2^2243740 is an apocalyptic number.

2243740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243740 is an abundant number, since it is smaller than the sum of its proper divisors (2579540).

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

2243740 is a wasteful number, since it uses less digits than its factorization.

2243740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2243740 is about 1497.9118799182. The cubic root of 2243740 is about 130.9154320839.

The spelling of 2243740 in words is "two million, two hundred forty-three thousand, seven hundred forty".