3220214420 has 18 divisors (see below), whose sum is σ = 6762983262. Its totient is φ = 1287984256.

The previous prime is 3220214381. The next prime is 3220214441. The reversal of 3220214420 is 244120223.

It can be written as a sum of positive squares in 3 ways, for example, as 48497296 + 3171717124 = 6964^2 + 56318^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3220214392 and 3220214401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247436 + ... + 260124.

Almost surely, 2^3220214420 is an apocalyptic number.

It is an amenable number.

3220214420 is an abundant number, since it is smaller than the sum of its proper divisors (3542768842).

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

3220214420 is an frugal number, since it uses more digits than its factorization.

3220214420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387 (or 12696 counting only the distinct ones).

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

The square root of 3220214420 is about 56746.9331329897. The cubic root of 3220214420 is about 1476.7090285264.

Multiplying 3220214420 by its sum of digits (20), we get a square (64404288400 = 253780²).

3220214420 divided by its sum of digits (20) gives a square (161010721 = 12689²).

Adding to 3220214420 its reverse (244120223), we get a palindrome (3464334643).

The spelling of 3220214420 in words is "three billion, two hundred twenty million, two hundred fourteen thousand, four hundred twenty".