28815272258268 has 24 divisors (see below), whose sum is σ = 67236427535760. Its totient is φ = 9604977571840.

The previous prime is 28815272258263. The next prime is 28815272258287. The reversal of 28815272258268 is 86285227251882.

It is a junction number, because it is equal to n+sod(n) for n = 28815272258199 and 28815272258208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28815272258263) 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, 13083603 + ... + 15126506.

It is an arithmetic number, because the mean of its divisors is an integer number (2801517813990).

Almost surely, 2^{28815272258268} is an apocalyptic number.

It is an amenable number.

28815272258268 is an abundant number, since it is smaller than the sum of its proper divisors (38421155277492).

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

28815272258268 is a wasteful number, since it uses less digits than its factorization.

28815272258268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28295237 (or 28295235 counting only the distinct ones).

The product of its digits is 137625600, while the sum is 66.

The spelling of 28815272258268 in words is "twenty-eight trillion, eight hundred fifteen billion, two hundred seventy-two million, two hundred fifty-eight thousand, two hundred sixty-eight".