2443220 has 24 divisors (see below), whose sum is σ = 5526024. Its totient is φ = 902016.

The previous prime is 2443219. The next prime is 2443241. The reversal of 2443220 is 223442.

2443220 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 126736 + 2316484 = 356^2 + 1522^2 .

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, 4439 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (230251).

2^2443220 is an apocalyptic number.

2443220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2443220 is an abundant number, since it is smaller than the sum of its proper divisors (3082804).

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

2443220 is a wasteful number, since it uses less digits than its factorization.

2443220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419 (or 9417 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2443220 is about 1563.0802922435. The cubic root of 2443220 is about 134.6855047768.

Adding to 2443220 its reverse (223442), we get a palindrome (2666662).

The spelling of 2443220 in words is "two million, four hundred forty-three thousand, two hundred twenty".