28656882435705 has 32 divisors (see below), whose sum is σ = 45863661888000. Its totient is φ = 15279454670592.

The previous prime is 28656882435703. The next prime is 28656882435739. The reversal of 28656882435705 is 50753428865682.

It is not a de Polignac number, because 28656882435705 - 2¹ = 28656882435703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28656882435705.

It is not an unprimeable number, because it can be changed into a prime (28656882435703) 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 31 ways as a sum of consecutive naturals, for example, 1064229952 + ... + 1064256878.

It is an arithmetic number, because the mean of its divisors is an integer number (1433239434000).

Almost surely, 2^{28656882435705} is an apocalyptic number.

It is an amenable number.

28656882435705 is a deficient number, since it is larger than the sum of its proper divisors (17206779452295).

28656882435705 is a wasteful number, since it uses less digits than its factorization.

28656882435705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43873.

The product of its (nonzero) digits is 774144000, while the sum is 69.

The spelling of 28656882435705 in words is "twenty-eight trillion, six hundred fifty-six billion, eight hundred eighty-two million, four hundred thirty-five thousand, seven hundred five".