3216884720 has 80 divisors (see below), whose sum is σ = 8635988928. Its totient is φ = 1091543040.

The previous prime is 3216884639. The next prime is 3216884743. The reversal of 3216884720 is 274886123.

It is a tau number, because it is divible by the number of its divisors (80).

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, 24710 + ... + 83930.

Almost surely, 2^3216884720 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 3216884720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4317994464).

3216884720 is an abundant number, since it is smaller than the sum of its proper divisors (5419104208).

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

3216884720 is a wasteful number, since it uses less digits than its factorization.

3216884720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59338 (or 59332 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 3216884720 is about 56717.5873957981. The cubic root of 3216884720 is about 1476.1998808829.

The spelling of 3216884720 in words is "three billion, two hundred sixteen million, eight hundred eighty-four thousand, seven hundred twenty".