1028128077830 has 24 divisors (see below), whose sum is σ = 2152774302768. Its totient is φ = 352501055088.

The previous prime is 1028128077811. The next prime is 1028128077869. The reversal of 1028128077830 is 387708218201.

1028128077830 is digitally balanced in base 2, 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 11 ways as a sum of consecutive naturals, for example, 1049109794 + ... + 1049110773.

It is an arithmetic number, because the mean of its divisors is an integer number (89698929282).

Almost surely, 2^{1028128077830} is an apocalyptic number.

1028128077830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028128077830 is an abundant number, since it is smaller than the sum of its proper divisors (1124646224938).

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

1028128077830 is a wasteful number, since it uses less digits than its factorization.

1028128077830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098220588 (or 2098220581 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 1028128077830 in words is "one trillion, twenty-eight billion, one hundred twenty-eight million, seventy-seven thousand, eight hundred thirty".