28000255505024 has 128 divisors (see below), whose sum is σ = 61675598664000. Its totient is φ = 12555952414720.

The previous prime is 28000255505011. The next prime is 28000255505149. The reversal of 28000255505024 is 42050555200082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 55261022 + ... + 55765410.

Almost surely, 2^{28000255505024} 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 28000255505024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30837799332000).

28000255505024 is an abundant number, since it is smaller than the sum of its proper divisors (33675343158976).

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

28000255505024 is a wasteful number, since it uses less digits than its factorization.

28000255505024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504946 (or 504934 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 28000255505024 in words is "twenty-eight trillion, two hundred fifty-five million, five hundred five thousand, twenty-four".