28514712768 has 56 divisors (see below), whose sum is σ = 75488962560. Its totient is φ = 9499388160.

The previous prime is 28514712763. The next prime is 28514712773. The reversal of 28514712768 is 86721741582.

It is a happy number.

It is a Cunningham number, because it is equal to 168863²-1.

It is an interprime number because it is at equal distance from previous prime (28514712763) and next prime (28514712773).

It is a self number, because there is not a number n which added to its sum of digits gives 28514712768.

It is not an unprimeable number, because it can be changed into a prime (28514712763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295513 + ... + 379943.

Almost surely, 2^28514712768 is an apocalyptic number.

It is an amenable number.

28514712768 is an abundant number, since it is smaller than the sum of its proper divisors (46974249792).

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

28514712768 is a wasteful number, since it uses less digits than its factorization.

28514712768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86205 (or 86195 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The spelling of 28514712768 in words is "twenty-eight billion, five hundred fourteen million, seven hundred twelve thousand, seven hundred sixty-eight".