3216440612 has 144 divisors (see below), whose sum is σ = 7729612800. Its totient is φ = 1134492480.

The previous prime is 3216440567. The next prime is 3216440621. The reversal of 3216440612 is 2160446123.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3095189 + ... + 3096227.

Almost surely, 2^3216440612 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 3216440612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3864806400).

3216440612 is an abundant number, since it is smaller than the sum of its proper divisors (4513172188).

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

3216440612 is a wasteful number, since it uses less digits than its factorization.

3216440612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 3216440612 is about 56713.6721787613. The cubic root of 3216440612 is about 1476.1319453484.

Adding to 3216440612 its reverse (2160446123), we get a palindrome (5376886735).

The spelling of 3216440612 in words is "three billion, two hundred sixteen million, four hundred forty thousand, six hundred twelve".