3220615416 has 64 divisors (see below), whose sum is σ = 8344425600. Its totient is φ = 1034622848.

The previous prime is 3220615397. The next prime is 3220615421. The reversal of 3220615416 is 6145160223.

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, 404611 + ... + 412493.

It is an arithmetic number, because the mean of its divisors is an integer number (130381650).

Almost surely, 2^3220615416 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 3220615416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4172212800).

3220615416 is an abundant number, since it is smaller than the sum of its proper divisors (5123810184).

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

3220615416 is a wasteful number, since it uses less digits than its factorization.

3220615416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8508 (or 8504 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 3220615416 is about 56750.4662183493. The cubic root of 3220615416 is about 1476.7703215294.

Adding to 3220615416 its reverse (6145160223), we get a palindrome (9365775639).

The spelling of 3220615416 in words is "three billion, two hundred twenty million, six hundred fifteen thousand, four hundred sixteen".