2223778 has 16 divisors (see below), whose sum is σ = 3602880. Its totient is φ = 1026256.

The previous prime is 2223773. The next prime is 2223829. The reversal of 2223778 is 8773222.

2223778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2223773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (225180).

2^2223778 is an apocalyptic number.

2223778 is a deficient number, since it is larger than the sum of its proper divisors (1379102).

2223778 is a wasteful number, since it uses less digits than its factorization.

2223778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721.

The product of its digits is 9408, while the sum is 31.

The square root of 2223778 is about 1491.2337174300. The cubic root of 2223778 is about 130.5260342553.

The spelling of 2223778 in words is "two million, two hundred twenty-three thousand, seven hundred seventy-eight".