3220223820 has 144 divisors (see below), whose sum is σ = 10099041120. Its totient is φ = 765839360.

The previous prime is 3220223807. The next prime is 3220223857. The reversal of 3220223820 is 283220223.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380596 + ... + 388964.

It is an arithmetic number, because the mean of its divisors is an integer number (70132230).

Almost surely, 2^3220223820 is an apocalyptic number.

3220223820 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 3220223820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5049520560).

3220223820 is an abundant number, since it is smaller than the sum of its proper divisors (6878817300).

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

3220223820 is a wasteful number, since it uses less digits than its factorization.

3220223820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456 (or 8443 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 3220223820 is about 56747.0159567884. The cubic root of 3220223820 is about 1476.7104653926.

The spelling of 3220223820 in words is "three billion, two hundred twenty million, two hundred twenty-three thousand, eight hundred twenty".