2216720704 has 28 divisors (see below), whose sum is σ = 4798698048. Its totient is φ = 1007600000.

The previous prime is 2216720699. The next prime is 2216720711. The reversal of 2216720704 is 4070276122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1573672 + ... + 1575079.

Almost surely, 2^2216720704 is an apocalyptic number.

It is an amenable number.

2216720704 is an abundant number, since it is smaller than the sum of its proper divisors (2581977344).

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

2216720704 is a wasteful number, since it uses less digits than its factorization.

2216720704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148774 (or 3148764 counting only the distinct ones).

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

The square root of 2216720704 is about 47082.0635061804. The cubic root of 2216720704 is about 1303.8781047060.

Adding to 2216720704 its reverse (4070276122), we get a palindrome (6286996826).

The spelling of 2216720704 in words is "two billion, two hundred sixteen million, seven hundred twenty thousand, seven hundred four".