3220020540 has 180 divisors, whose sum is σ = 11103783768. Its totient is φ = 780563520.

The previous prime is 3220020523. The next prime is 3220020577. The reversal of 3220020540 is 450200223.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 187807 + ... + 204233.

Almost surely, 2^3220020540 is an apocalyptic number.

3220020540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220020540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5551891884).

3220020540 is an abundant number, since it is smaller than the sum of its proper divisors (7883763228).

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

3220020540 is a wasteful number, since it uses less digits than its factorization.

3220020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470 (or 16448 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3220020540 is about 56745.2248211248. The cubic root of 3220020540 is about 1476.6793917740.

Adding to 3220020540 its reverse (450200223), we get a palindrome (3670220763).

The spelling of 3220020540 in words is "three billion, two hundred twenty million, twenty thousand, five hundred forty".