28287587736 has 96 divisors (see below), whose sum is σ = 77070957600. Its totient is φ = 9372879360.

The previous prime is 28287587723. The next prime is 28287587831. The reversal of 28287587736 is 63778578282.

28287587736 is a `hidden beast` number, since 28 + 28 + 7 + 587 + 7 + 3 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15448341 + ... + 15450171.

It is an arithmetic number, because the mean of its divisors is an integer number (802822475).

Almost surely, 2^28287587736 is an apocalyptic number.

It is an amenable number.

28287587736 is an abundant number, since it is smaller than the sum of its proper divisors (48783369864).

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

28287587736 is a wasteful number, since it uses less digits than its factorization.

28287587736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009 (or 3002 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 28287587736 in words is "twenty-eight billion, two hundred eighty-seven million, five hundred eighty-seven thousand, seven hundred thirty-six".