28646314688 has 28 divisors (see below), whose sum is σ = 56851491072. Its totient is φ = 14321529600.

The previous prime is 28646314681. The next prime is 28646314699. The reversal of 28646314688 is 88641364682.

It is a super-2 number, since 2×28646314688² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28646314681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704513 + ... + 744063.

Almost surely, 2^28646314688 is an apocalyptic number.

It is an amenable number.

28646314688 is a deficient number, since it is larger than the sum of its proper divisors (28205176384).

28646314688 is a wasteful number, since it uses less digits than its factorization.

28646314688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50880 (or 50870 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 56.

The spelling of 28646314688 in words is "twenty-eight billion, six hundred forty-six million, three hundred fourteen thousand, six hundred eighty-eight".