2243868 has 48 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 668800.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243868 is 8683422.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11653 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2243868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2243868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2243868 is an abundant number, since it is smaller than the sum of its proper divisors (3562212).

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

2243868 is a wasteful number, since it uses less digits than its factorization.

2243868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 296 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 2243868 is about 1497.9546054537. The cubic root of 2243868 is about 130.9179215073.

The spelling of 2243868 in words is "two million, two hundred forty-three thousand, eight hundred sixty-eight".