28027863944208 has 240 divisors, whose sum is σ = 80218860164352. Its totient is φ = 9133718400000.

The previous prime is 28027863944203. The next prime is 28027863944231. The reversal of 28027863944208 is 80244936872082.

28027863944208 is a `hidden beast` number, since 2 + 80 + 2 + 7 + 86 + 39 + 442 + 0 + 8 = 666.

It is a super-2 number, since 2×28027863944208² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28027863944203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366717838 + ... + 366794258.

Almost surely, 2^{28027863944208} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28027863944208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40109430082176).

28027863944208 is an abundant number, since it is smaller than the sum of its proper divisors (52190996220144).

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

28027863944208 is a wasteful number, since it uses less digits than its factorization.

28027863944208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76854 (or 76845 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 63.

The spelling of 28027863944208 in words is "twenty-eight trillion, twenty-seven billion, eight hundred sixty-three million, nine hundred forty-four thousand, two hundred eight".