3221812608 has 128 divisors (see below), whose sum is σ = 9867985920. Its totient is φ = 912285696.

The previous prime is 3221812571. The next prime is 3221812619. The reversal of 3221812608 is 8062181223.

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, 298441 + ... + 309047.

It is an arithmetic number, because the mean of its divisors is an integer number (77093640).

Almost surely, 2^3221812608 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 3221812608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4933992960).

3221812608 is an abundant number, since it is smaller than the sum of its proper divisors (6646173312).

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

3221812608 is a wasteful number, since it uses less digits than its factorization.

3221812608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10744 (or 10732 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 3221812608 is about 56761.0130987811. The cubic root of 3221812608 is about 1476.9532843448.

The spelling of 3221812608 in words is "three billion, two hundred twenty-one million, eight hundred twelve thousand, six hundred eight".