28529236836 has 27 divisors (see below), whose sum is σ = 72118132723. Its totient is φ = 9509407800.

The previous prime is 28529236807. The next prime is 28529236861. The reversal of 28529236836 is 63863292582.

The square root of 28529236836 is 168906.

It is a perfect power (a square), and thus also a powerful number.

28529236836 is a `hidden beast` number, since 2 + 8 + 529 + 2 + 36 + 83 + 6 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 999361 + ... + 1027511.

Almost surely, 2^28529236836 is an apocalyptic number.

28529236836 is the 168906-th square number.

It is an amenable number.

28529236836 is an abundant number, since it is smaller than the sum of its proper divisors (43588895887).

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

28529236836 is an frugal number, since it uses more digits than its factorization.

28529236836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56312 (or 28156 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 28529236836 in words is "twenty-eight billion, five hundred twenty-nine million, two hundred thirty-six thousand, eight hundred thirty-six".