28171392181248 has 88 divisors (see below), whose sum is σ = 79503915305952. Its totient is φ = 8838083805184.

The previous prime is 28171392181243. The next prime is 28171392181271. The reversal of 28171392181248 is 84218129317182.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28171392181243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269664690 + ... + 269769137.

Almost surely, 2^{28171392181248} is an apocalyptic number.

It is an amenable number.

28171392181248 is an abundant number, since it is smaller than the sum of its proper divisors (51332523124704).

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

28171392181248 is a wasteful number, since it uses less digits than its factorization.

28171392181248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539433867 (or 539433849 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 57.

The spelling of 28171392181248 in words is "twenty-eight trillion, one hundred seventy-one billion, three hundred ninety-two million, one hundred eighty-one thousand, two hundred forty-eight".