2243878 has 16 divisors (see below), whose sum is σ = 4142880. Its totient is φ = 887616.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243878 is 8783422.

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, 5983 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (258930).

2^2243878 is an apocalyptic number.

2243878 is a deficient number, since it is larger than the sum of its proper divisors (1899002).

2243878 is a wasteful number, since it uses less digits than its factorization.

2243878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12351.

The product of its digits is 21504, while the sum is 34.

The square root of 2243878 is about 1497.9579433349. The cubic root of 2243878 is about 130.9181159895.

The spelling of 2243878 in words is "two million, two hundred forty-three thousand, eight hundred seventy-eight".