3221424020 has 12 divisors (see below), whose sum is σ = 6764990484. Its totient is φ = 1288569600.

The previous prime is 3221424007. The next prime is 3221424047. The reversal of 3221424020 is 204241223.

It can be written as a sum of positive squares in 2 ways, for example, as 2073163024 + 1148260996 = 45532^2 + 33886^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 161071201 = 3221424020 / (3 + 2 + 2 + 1 + 4 + 2 + 4 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 3221423983 and 3221424001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80535581 + ... + 80535620.

It is an arithmetic number, because the mean of its divisors is an integer number (563749207).

Almost surely, 2^3221424020 is an apocalyptic number.

It is an amenable number.

3221424020 is an abundant number, since it is smaller than the sum of its proper divisors (3543566464).

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

3221424020 is a wasteful number, since it uses less digits than its factorization.

3221424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161071210 (or 161071208 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3221424020 is about 56757.5899770242. The cubic root of 3221424020 is about 1476.8939027204.

Adding to 3221424020 its reverse (204241223), we get a palindrome (3425665243).

The spelling of 3221424020 in words is "three billion, two hundred twenty-one million, four hundred twenty-four thousand, twenty".