28645835685 has 16 divisors (see below), whose sum is σ = 46413507840. Its totient is φ = 15084388800.

The previous prime is 28645835663. The next prime is 28645835689. The reversal of 28645835685 is 58653854682.

It is a happy number.

It is not a de Polignac number, because 28645835685 - 2⁸ = 28645835429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28645835689) 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 15 ways as a sum of consecutive naturals, for example, 12085666 + ... + 12088035.

It is an arithmetic number, because the mean of its divisors is an integer number (2900844240).

Almost surely, 2^28645835685 is an apocalyptic number.

It is an amenable number.

28645835685 is a deficient number, since it is larger than the sum of its proper divisors (17767672155).

28645835685 is a wasteful number, since it uses less digits than its factorization.

28645835685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24173788.

The product of its digits is 55296000, while the sum is 60.

The spelling of 28645835685 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-five thousand, six hundred eighty-five".