28395685859 has 8 divisors (see below), whose sum is σ = 28424181840. Its totient is φ = 28367208576.

The previous prime is 28395685793. The next prime is 28395685861. The reversal of 28395685859 is 95858659382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28395685859 - 2²⁴ = 28378908643 is a prime.

It is a super-3 number, since 3×28395685859³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28395685889) 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, 7063352 + ... + 7067370.

It is an arithmetic number, because the mean of its divisors is an integer number (3553022730).

Almost surely, 2^28395685859 is an apocalyptic number.

28395685859 is a deficient number, since it is larger than the sum of its proper divisors (28495981).

28395685859 is a wasteful number, since it uses less digits than its factorization.

28395685859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9349.

The product of its digits is 186624000, while the sum is 68.

The spelling of 28395685859 in words is "twenty-eight billion, three hundred ninety-five million, six hundred eighty-five thousand, eight hundred fifty-nine".