28113572889688 has 64 divisors (see below), whose sum is σ = 62050168000800. Its totient is φ = 11772729799680.

The previous prime is 28113572889583. The next prime is 28113572889691. The reversal of 28113572889688 is 88698827531182.

It is a congruent number.

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, 23557981 + ... + 24722572.

Almost surely, 2^{28113572889688} is an apocalyptic number.

It is an amenable number.

28113572889688 is an abundant number, since it is smaller than the sum of its proper divisors (33936595111112).

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

28113572889688 is a wasteful number, since it uses less digits than its factorization.

28113572889688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48281092 (or 48281088 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 76.

The spelling of 28113572889688 in words is "twenty-eight trillion, one hundred thirteen billion, five hundred seventy-two million, eight hundred eighty-nine thousand, six hundred eighty-eight".