3721017216 has 128 divisors (see below), whose sum is σ = 11509516800. Its totient is φ = 1043048448.

The previous prime is 3721017193. The next prime is 3721017241. The reversal of 3721017216 is 6127101273.

3721017216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129405 + ... + 155523.

It is an arithmetic number, because the mean of its divisors is an integer number (89918100).

Almost surely, 2^3721017216 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 3721017216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5754758400).

3721017216 is an abundant number, since it is smaller than the sum of its proper divisors (7788499584).

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

3721017216 is a wasteful number, since it uses less digits than its factorization.

3721017216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26196 (or 26184 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 3721017216 is about 61000.1411145909. The cubic root of 3721017216 is about 1549.6033971066.

Adding to 3721017216 its reverse (6127101273), we get a palindrome (9848118489).

The spelling of 3721017216 in words is "three billion, seven hundred twenty-one million, seventeen thousand, two hundred sixteen".