2223644672 has 42 divisors (see below), whose sum is σ = 4455569829. Its totient is φ = 1109688320.

The previous prime is 2223644641. The next prime is 2223644677. The reversal of 2223644672 is 2764463222.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2117472256 + 106172416 = 46016^2 + 10304^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33344.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223644677) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4267772 + ... + 4268292.

Almost surely, 2^2223644672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223644672

2223644672 is an abundant number, since it is smaller than the sum of its proper divisors (2231925157).

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

2223644672 is an frugal number, since it uses more digits than its factorization.

2223644672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 523 counting only the distinct ones).

The product of its digits is 193536, while the sum is 38.

The square root of 2223644672 is about 47155.5370237685. The cubic root of 2223644672 is about 1305.2342561321.

The spelling of 2223644672 in words is "two billion, two hundred twenty-three million, six hundred forty-four thousand, six hundred seventy-two".