28324563864 has 64 divisors (see below), whose sum is σ = 71332034400. Its totient is φ = 9372324864.

The previous prime is 28324563859. The next prime is 28324563931. The reversal of 28324563864 is 46836542382.

It is a super-2 number, since 2×28324563864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2154142 + ... + 2167250.

Almost surely, 2^28324563864 is an apocalyptic number.

28324563864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28324563864 is an abundant number, since it is smaller than the sum of its proper divisors (43007470536).

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

28324563864 is a wasteful number, since it uses less digits than its factorization.

28324563864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13772 (or 13768 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 51.

The spelling of 28324563864 in words is "twenty-eight billion, three hundred twenty-four million, five hundred sixty-three thousand, eight hundred sixty-four".