2223220 has 24 divisors (see below), whose sum is σ = 4725000. Its totient is φ = 878592.

The previous prime is 2223217. The next prime is 2223233. The reversal of 2223220 is 223222.

2223220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 2196324 = 164^2 + 1482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2223220.

It is a congruent number.

It is an unprimeable number.

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, 1156 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (196875).

2^2223220 is an apocalyptic number.

2223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2223220 is an abundant number, since it is smaller than the sum of its proper divisors (2501780).

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

2223220 is a wasteful number, since it uses less digits than its factorization.

2223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2223220 is about 1491.0466122828. The cubic root of 2223220 is about 130.5151159563.

Adding to 2223220 its reverse (223222), we get a palindrome (2446442).

The spelling of 2223220 in words is "two million, two hundred twenty-three thousand, two hundred twenty".