805396236 has 48 divisors (see below), whose sum is σ = 1948074240. Its totient is φ = 258672960.

The previous prime is 805396219. The next prime is 805396259. The reversal of 805396236 is 632693508.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188241 + ... + 192471.

It is an arithmetic number, because the mean of its divisors is an integer number (40584880).

Almost surely, 2^805396236 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 805396236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974037120).

805396236 is an abundant number, since it is smaller than the sum of its proper divisors (1142678004).

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

805396236 is a wasteful number, since it uses less digits than its factorization.

805396236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 805396236 is about 28379.5038011590. The cubic root of 805396236 is about 930.4003502346.

The spelling of 805396236 in words is "eight hundred five million, three hundred ninety-six thousand, two hundred thirty-six".