3220534420 has 48 divisors (see below), whose sum is σ = 7006078800. Its totient is φ = 1242644480.

The previous prime is 3220534397. The next prime is 3220534433. The reversal of 3220534420 is 244350223.

It can be written as a sum of positive squares in 8 ways, for example, as 1938464784 + 1282069636 = 44028^2 + 35806^2 .

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, 50916 + ... + 95044.

It is an arithmetic number, because the mean of its divisors is an integer number (145959975).

Almost surely, 2^3220534420 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 3220534420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3503039400).

3220534420 is an abundant number, since it is smaller than the sum of its proper divisors (3785544380).

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

3220534420 is a wasteful number, since it uses less digits than its factorization.

3220534420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44268 (or 44266 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 3220534420 is about 56749.7525985797. The cubic root of 3220534420 is about 1476.7579415465.

Adding to 3220534420 its reverse (244350223), we get a palindrome (3464884643).

The spelling of 3220534420 in words is "three billion, two hundred twenty million, five hundred thirty-four thousand, four hundred twenty".