28851708124728 has 96 divisors (see below), whose sum is σ = 80951884940160. Its totient is φ = 9273403134720.

The previous prime is 28851708124721. The next prime is 28851708124747. The reversal of 28851708124728 is 82742180715882.

It is a happy number.

28851708124728 is a `hidden beast` number, since 2 + 8 + 85 + 1 + 7 + 0 + 81 + 2 + 472 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28851708124721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22714575 + ... + 23951102.

It is an arithmetic number, because the mean of its divisors is an integer number (843248801460).

Almost surely, 2^{28851708124728} is an apocalyptic number.

It is an amenable number.

28851708124728 is an abundant number, since it is smaller than the sum of its proper divisors (52100176815432).

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

28851708124728 is a wasteful number, since it uses less digits than its factorization.

28851708124728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46665997 (or 46665990 counting only the distinct ones).

The product of its (nonzero) digits is 32112640, while the sum is 63.

The spelling of 28851708124728 in words is "twenty-eight trillion, eight hundred fifty-one billion, seven hundred eight million, one hundred twenty-four thousand, seven hundred twenty-eight".