3221065240 has 32 divisors (see below), whose sum is σ = 7249914000. Its totient is φ = 1287978624.

The previous prime is 3221065219. The next prime is 3221065249. The reversal of 3221065240 is 425601223.

It is a super-2 number, since 2×3221065240² = 20750522560672515200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221065249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118006 + ... + 142714.

Almost surely, 2^3221065240 is an apocalyptic number.

It is an amenable number.

3221065240 is an abundant number, since it is smaller than the sum of its proper divisors (4028848760).

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

3221065240 is a wasteful number, since it uses less digits than its factorization.

3221065240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27979 (or 27975 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 3221065240 is about 56754.4292544644. The cubic root of 3221065240 is about 1476.8390719309.

Adding to 3221065240 its reverse (425601223), we get a palindrome (3646666463).

The spelling of 3221065240 in words is "three billion, two hundred twenty-one million, sixty-five thousand, two hundred forty".