3220012540 has 24 divisors (see below), whose sum is σ = 6783643440. Its totient is φ = 1283887488.

The previous prime is 3220012513. The next prime is 3220012541. The reversal of 3220012540 is 452100223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220012541) 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, 250930 + ... + 263449.

It is an arithmetic number, because the mean of its divisors is an integer number (282651810).

Almost surely, 2^3220012540 is an apocalyptic number.

It is an amenable number.

3220012540 is an abundant number, since it is smaller than the sum of its proper divisors (3563630900).

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

3220012540 is a wasteful number, since it uses less digits than its factorization.

3220012540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514701 (or 514699 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3220012540 is about 56745.1543305682. The cubic root of 3220012540 is about 1476.6781688579.

Adding to 3220012540 its reverse (452100223), we get a palindrome (3672112763).

The spelling of 3220012540 in words is "three billion, two hundred twenty million, twelve thousand, five hundred forty".