805708220 has 24 divisors (see below), whose sum is σ = 1733257008. Its totient is φ = 314422400.

The previous prime is 805708219. The next prime is 805708223. The reversal of 805708220 is 22807508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805708223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 490466 + ... + 492105.

It is an arithmetic number, because the mean of its divisors is an integer number (72219042).

Almost surely, 2^805708220 is an apocalyptic number.

It is an amenable number.

805708220 is an abundant number, since it is smaller than the sum of its proper divisors (927548788).

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

805708220 is a wasteful number, since it uses less digits than its factorization.

805708220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982621 (or 982619 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 805708220 is about 28384.9999119253. Note that the first 4 decimals coincide. The cubic root of 805708220 is about 930.5204702193.

The spelling of 805708220 in words is "eight hundred five million, seven hundred eight thousand, two hundred twenty".