28755686432 has 24 divisors (see below), whose sum is σ = 61759372752. Its totient is φ = 13070766400.

The previous prime is 28755686419. The next prime is 28755686437. The reversal of 28755686432 is 23468655782.

It is a super-3 number, since 3×28755686432³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28755686437) 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 3 ways as a sum of consecutive naturals, for example, 40845794 + ... + 40846497.

It is an arithmetic number, because the mean of its divisors is an integer number (2573307198).

Almost surely, 2^28755686432 is an apocalyptic number.

28755686432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28755686432 is an abundant number, since it is smaller than the sum of its proper divisors (33003686320).

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

28755686432 is a wasteful number, since it uses less digits than its factorization.

28755686432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81692312 (or 81692304 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 56.

The spelling of 28755686432 in words is "twenty-eight billion, seven hundred fifty-five million, six hundred eighty-six thousand, four hundred thirty-two".