28686435626 has 8 divisors (see below), whose sum is σ = 43188435264. Its totient is φ = 14290290540.

The previous prime is 28686435593. The next prime is 28686435637. The reversal of 28686435626 is 62653468682.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26462960 + ... + 26464043.

It is an arithmetic number, because the mean of its divisors is an integer number (5398554408).

Almost surely, 2^28686435626 is an apocalyptic number.

28686435626 is a deficient number, since it is larger than the sum of its proper divisors (14501999638).

28686435626 is a wasteful number, since it uses less digits than its factorization.

28686435626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52927276.

The product of its digits is 19906560, while the sum is 56.

The spelling of 28686435626 in words is "twenty-eight billion, six hundred eighty-six million, four hundred thirty-five thousand, six hundred twenty-six".