2028387686928 has 20 divisors (see below), whose sum is σ = 5240001524688. Its totient is φ = 676129228960.

The previous prime is 2028387686909. The next prime is 2028387686989. The reversal of 2028387686928 is 8296867838202.

It is a super-2 number, since 2×2028387686928² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21129038358 + ... + 21129038453.

Almost surely, 2^{2028387686928} is an apocalyptic number.

It is an amenable number.

2028387686928 is an abundant number, since it is smaller than the sum of its proper divisors (3211613837760).

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

2028387686928 is a wasteful number, since it uses less digits than its factorization.

2028387686928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42258076822 (or 42258076816 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 69.

The spelling of 2028387686928 in words is "two trillion, twenty-eight billion, three hundred eighty-seven million, six hundred eighty-six thousand, nine hundred twenty-eight".