3220389900 has 720 divisors, whose sum is σ = 13657000896. Its totient is φ = 637009920.

The previous prime is 3220389881. The next prime is 3220389911. The reversal of 3220389900 is 99830223.

3220389900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3220389900² = 20741822216044020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 12530572 + ... + 12530828.

Almost surely, 2^3220389900 is an apocalyptic number.

3220389900 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 3220389900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6828500448).

3220389900 is an abundant number, since it is smaller than the sum of its proper divisors (10436610996).

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

3220389900 is a wasteful number, since it uses less digits than its factorization.

3220389900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3220389900 is about 56748.4792747788. The cubic root of 3220389900 is about 1476.7358516050.

The spelling of 3220389900 in words is "three billion, two hundred twenty million, three hundred eighty-nine thousand, nine hundred".