1028404568140 has 24 divisors (see below), whose sum is σ = 2160206797392. Its totient is φ = 411255693120.

The previous prime is 1028404568131. The next prime is 1028404568167. The reversal of 1028404568140 is 418654048201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6553906 + ... + 6708985.

It is an arithmetic number, because the mean of its divisors is an integer number (90008616558).

Almost surely, 2^{1028404568140} is an apocalyptic number.

1028404568140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028404568140 is an abundant number, since it is smaller than the sum of its proper divisors (1131802229252).

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

1028404568140 is a wasteful number, since it uses less digits than its factorization.

1028404568140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13266777 (or 13266775 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 1028404568140 in words is "one trillion, twenty-eight billion, four hundred four million, five hundred sixty-eight thousand, one hundred forty".