28285081826 has 8 divisors (see below), whose sum is σ = 43123157724. Its totient is φ = 13910695920.

The previous prime is 28285081793. The next prime is 28285081837. The reversal of 28285081826 is 62818058282.

It can be written as a sum of positive squares in 2 ways, for example, as 21199651201 + 7085430625 = 145601^2 + 84175^2 .

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

It is a Curzon number.

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, 115922345 + ... + 115922588.

Almost surely, 2^28285081826 is an apocalyptic number.

28285081826 is a deficient number, since it is larger than the sum of its proper divisors (14838075898).

28285081826 is a wasteful number, since it uses less digits than its factorization.

28285081826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231844996.

The product of its (nonzero) digits is 983040, while the sum is 50.

The spelling of 28285081826 in words is "twenty-eight billion, two hundred eighty-five million, eighty-one thousand, eight hundred twenty-six".