28068960320 has 56 divisors (see below), whose sum is σ = 66885235800. Its totient is φ = 11219853312.

The previous prime is 28068960289. The next prime is 28068960329. The reversal of 28068960320 is 2306986082.

It can be written as a sum of positive squares in 4 ways, for example, as 952092736 + 27116867584 = 30856^2 + 164672^2 .

It is not an unprimeable number, because it can be changed into a prime (28068960329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447026 + ... + 505934.

Almost surely, 2^28068960320 is an apocalyptic number.

28068960320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28068960320 is an abundant number, since it is smaller than the sum of its proper divisors (38816275480).

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

28068960320 is a wasteful number, since it uses less digits than its factorization.

28068960320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60415 (or 60405 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 28068960320 in words is "twenty-eight billion, sixty-eight million, nine hundred sixty thousand, three hundred twenty".