3208220928 has 216 divisors, whose sum is σ = 10197270720. Its totient is φ = 961966080.

The previous prime is 3208220923. The next prime is 3208220957. The reversal of 3208220928 is 8290228023.

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

It is a junction number, because it is equal to n+sod(n) for n = 3208220892 and 3208220901.

It is not an unprimeable number, because it can be changed into a prime (3208220923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2609818 + ... + 2611046.

Almost surely, 2^3208220928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3208220928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5098635360).

3208220928 is an abundant number, since it is smaller than the sum of its proper divisors (6989049792).

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

3208220928 is a wasteful number, since it uses less digits than its factorization.

3208220928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 3208220928 is about 56641.1593101695. The cubic root of 3208220928 is about 1474.8734435896.

The spelling of 3208220928 in words is "three billion, two hundred eight million, two hundred twenty thousand, nine hundred twenty-eight".