805384836 has 96 divisors (see below), whose sum is σ = 2249318400. Its totient is φ = 248482080.

The previous prime is 805384831. The next prime is 805384849. The reversal of 805384836 is 638483508.

805384836 is a `hidden beast` number, since 80 + 538 + 4 + 8 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 805384791 and 805384800.

It is not an unprimeable number, because it can be changed into a prime (805384831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71775 + ... + 82233.

It is an arithmetic number, because the mean of its divisors is an integer number (23430400).

Almost surely, 2^805384836 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 805384836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124659200).

805384836 is an abundant number, since it is smaller than the sum of its proper divisors (1443933564).

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

805384836 is a wasteful number, since it uses less digits than its factorization.

805384836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526 (or 10518 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 805384836 is about 28379.3029512707. The cubic root of 805384836 is about 930.3959604227.

It can be divided in two parts, 805 and 384836, that added together give a square (385641 = 621²).

The spelling of 805384836 in words is "eight hundred five million, three hundred eighty-four thousand, eight hundred thirty-six".