28765587324 has 24 divisors (see below), whose sum is σ = 71067922128. Its totient is φ = 9024497920.

The previous prime is 28765587313. The next prime is 28765587337. The reversal of 28765587324 is 42378556782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70503687 + ... + 70504094.

It is an arithmetic number, because the mean of its divisors is an integer number (2961163422).

Almost surely, 2^28765587324 is an apocalyptic number.

It is an amenable number.

28765587324 is an abundant number, since it is smaller than the sum of its proper divisors (42302334804).

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

28765587324 is a wasteful number, since it uses less digits than its factorization.

28765587324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141007805 (or 141007803 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 57.

It can be divided in two parts, 2876558 and 7324, that added together give a palindrome (2883882).

The spelling of 28765587324 in words is "twenty-eight billion, seven hundred sixty-five million, five hundred eighty-seven thousand, three hundred twenty-four".