28275781727322 has 64 divisors (see below), whose sum is σ = 62945822511360. Its totient is φ = 9408651826752.

The previous prime is 28275781727269. The next prime is 28275781727419. The reversal of 28275781727322 is 22372718757282.

It is a happy number.

28275781727322 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 578 + 1 + 7 + 27 + 32 + 2 = 666.

It is a super-2 number, since 2×28275781727322² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28275781727322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272609323 + ... + 272713025.

It is an arithmetic number, because the mean of its divisors is an integer number (983528476740).

Almost surely, 2^{28275781727322} is an apocalyptic number.

28275781727322 is an abundant number, since it is smaller than the sum of its proper divisors (34670040784038).

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

28275781727322 is a wasteful number, since it uses less digits than its factorization.

28275781727322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112564 (or 112558 counting only the distinct ones).

The product of its digits is 73758720, while the sum is 63.

The spelling of 28275781727322 in words is "twenty-eight trillion, two hundred seventy-five billion, seven hundred eighty-one million, seven hundred twenty-seven thousand, three hundred twenty-two".