28725796139288 has 32 divisors (see below), whose sum is σ = 54747079623360. Its totient is φ = 14126602836480.

The previous prime is 28725796139269. The next prime is 28725796139291. The reversal of 28725796139288 is 88293169752782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6531056 + ... + 10005312.

It is an arithmetic number, because the mean of its divisors is an integer number (1710846238230).

Almost surely, 2^{28725796139288} is an apocalyptic number.

It is an amenable number.

28725796139288 is a deficient number, since it is larger than the sum of its proper divisors (26021283484072).

28725796139288 is a wasteful number, since it uses less digits than its factorization.

28725796139288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491267 (or 3491263 counting only the distinct ones).

The product of its digits is 1463132160, while the sum is 77.

The spelling of 28725796139288 in words is "twenty-eight trillion, seven hundred twenty-five billion, seven hundred ninety-six million, one hundred thirty-nine thousand, two hundred eighty-eight".