3128027220 has 144 divisors (see below), whose sum is σ = 9884609280. Its totient is φ = 830342016.

The previous prime is 3128027219. The next prime is 3128027233. The reversal of 3128027220 is 227208213.

It is a happy number.

3128027220 is a `hidden beast` number, since 312 + 80 + 272 + 2 + 0 = 666.

3128027220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 1160194 + ... + 1162886.

It is an arithmetic number, because the mean of its divisors is an integer number (68643120).

Almost surely, 2^3128027220 is an apocalyptic number.

3128027220 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 3128027220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4942304640).

3128027220 is an abundant number, since it is smaller than the sum of its proper divisors (6756582060).

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

3128027220 is a wasteful number, since it uses less digits than its factorization.

3128027220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 3128027220 is about 55928.7691622120. The cubic root of 3128027220 is about 1462.4808044818.

The spelling of 3128027220 in words is "three billion, one hundred twenty-eight million, twenty-seven thousand, two hundred twenty".