805838861828 has 192 divisors, whose sum is σ = 1911045685248. Its totient is φ = 287128558080.

The previous prime is 805838861801. The next prime is 805838861837. The reversal of 805838861828 is 828168838508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 240762851 + ... + 240766197.

It is an arithmetic number, because the mean of its divisors is an integer number (9953362944).

Almost surely, 2^805838861828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805838861828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955522842624).

805838861828 is an abundant number, since it is smaller than the sum of its proper divisors (1105206823420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805838861828 is a wasteful number, since it uses less digits than its factorization.

805838861828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 47185920, while the sum is 65.

The spelling of 805838861828 in words is "eight hundred five billion, eight hundred thirty-eight million, eight hundred sixty-one thousand, eight hundred twenty-eight".