2220640444 has 12 divisors (see below), whose sum is σ = 4239404568. Its totient is φ = 1009382000.

The previous prime is 2220640441. The next prime is 2220640451. The reversal of 2220640444 is 4440460222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220640441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25234507 + ... + 25234594.

It is an arithmetic number, because the mean of its divisors is an integer number (353283714).

Almost surely, 2^2220640444 is an apocalyptic number.

It is an amenable number.

2220640444 is a deficient number, since it is larger than the sum of its proper divisors (2018764124).

2220640444 is a wasteful number, since it uses less digits than its factorization.

2220640444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50469116 (or 50469114 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 2220640444 is about 47123.6718009113. The cubic root of 2220640444 is about 1304.6461842785.

The spelling of 2220640444 in words is "two billion, two hundred twenty million, six hundred forty thousand, four hundred forty-four".