3220345420 has 24 divisors (see below), whose sum is σ = 6785818704. Its totient is φ = 1283739456.

The previous prime is 3220345417. The next prime is 3220345421. The reversal of 3220345420 is 245430223.

It is a super-2 number, since 2×3220345420² = 20741249248229952800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3220345421) 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, 268914 + ... + 280633.

It is an arithmetic number, because the mean of its divisors is an integer number (282742446).

Almost surely, 2^3220345420 is an apocalyptic number.

It is an amenable number.

3220345420 is an abundant number, since it is smaller than the sum of its proper divisors (3565473284).

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

3220345420 is a wasteful number, since it uses less digits than its factorization.

3220345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549849 (or 549847 counting only the distinct ones).

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

The square root of 3220345420 is about 56748.0873686506. The cubic root of 3220345420 is about 1476.7290526857.

Adding to 3220345420 its reverse (245430223), we get a palindrome (3465775643).

The spelling of 3220345420 in words is "three billion, two hundred twenty million, three hundred forty-five thousand, four hundred twenty".