2243864 has 32 divisors (see below), whose sum is σ = 5093280. Its totient is φ = 904704.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243864 is 4683422.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 2130.

It is an arithmetic number, because the mean of its divisors is an integer number (159165).

2^2243864 is an apocalyptic number.

It is an amenable number.

2243864 is an abundant number, since it is smaller than the sum of its proper divisors (2849416).

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

2243864 is a wasteful number, since it uses less digits than its factorization.

2243864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387 (or 2383 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 2243864 is about 1497.9532702992. The cubic root of 2243864 is about 130.9178437142.

The spelling of 2243864 in words is "two million, two hundred forty-three thousand, eight hundred sixty-four".