2028666889020 has 96 divisors (see below), whose sum is σ = 5829261028416. Its totient is φ = 526835353600.

The previous prime is 2028666889019. The next prime is 2028666889033. The reversal of 2028666889020 is 209886668202.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 629950 + ... + 2110490.

It is an arithmetic number, because the mean of its divisors is an integer number (60721469046).

Almost surely, 2^{2028666889020} is an apocalyptic number.

2028666889020 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 2028666889020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2914630514208).

2028666889020 is an abundant number, since it is smaller than the sum of its proper divisors (3800594139396).

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

2028666889020 is a wasteful number, since it uses less digits than its factorization.

2028666889020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481151 (or 1481149 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 2028666889020 in words is "two trillion, twenty-eight billion, six hundred sixty-six million, eight hundred eighty-nine thousand, twenty".