28314884432688 has 160 divisors (see below), whose sum is σ = 88281925595136. Its totient is φ = 7644997434624.

The previous prime is 28314884432687. The next prime is 28314884432699. The reversal of 28314884432688 is 88623448841382.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28314884432687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21430470 + ... + 22713317.

Almost surely, 2^{28314884432688} is an apocalyptic number.

28314884432688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28314884432688 is an abundant number, since it is smaller than the sum of its proper divisors (59967041162448).

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

28314884432688 is a wasteful number, since it uses less digits than its factorization.

28314884432688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44143911 (or 44143905 counting only the distinct ones).

The product of its digits is 452984832, while the sum is 69.

The spelling of 28314884432688 in words is "twenty-eight trillion, three hundred fourteen billion, eight hundred eighty-four million, four hundred thirty-two thousand, six hundred eighty-eight".