28057827281504 has 24 divisors (see below), whose sum is σ = 56144402340768. Its totient is φ = 13798931448960.

The previous prime is 28057827281453. The next prime is 28057827281507. The reversal of 28057827281504 is 40518272875082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057827281507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7186941512 + ... + 7186945415.

It is an arithmetic number, because the mean of its divisors is an integer number (2339350097532).

Almost surely, 2^{28057827281504} is an apocalyptic number.

It is an amenable number.

28057827281504 is an abundant number, since it is smaller than the sum of its proper divisors (28086575059264).

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

28057827281504 is a wasteful number, since it uses less digits than its factorization.

28057827281504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373886998 (or 14373886990 counting only the distinct ones).

The product of its (nonzero) digits is 20070400, while the sum is 59.

The spelling of 28057827281504 in words is "twenty-eight trillion, fifty-seven billion, eight hundred twenty-seven million, two hundred eighty-one thousand, five hundred four".