2028805440 has 112 divisors (see below), whose sum is σ = 6508162752. Its totient is φ = 535412736.

The previous prime is 2028805439. The next prime is 2028805451. The reversal of 2028805440 is 445088202.

It is a happy number.

2028805440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82227 + ... + 104013.

It is an arithmetic number, because the mean of its divisors is an integer number (58108596).

Almost surely, 2^2028805440 is an apocalyptic number.

2028805440 is a gapful number since it is divisible by the number (20) 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 2028805440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254081376).

2028805440 is an abundant number, since it is smaller than the sum of its proper divisors (4479357312).

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

2028805440 is a wasteful number, since it uses less digits than its factorization.

2028805440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21904 (or 21894 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 2028805440 is about 45042.2628205999. The cubic root of 2028805440 is about 1265.9410038669.

The spelling of 2028805440 in words is "two billion, twenty-eight million, eight hundred five thousand, four hundred forty".