852721808 has 40 divisors (see below), whose sum is σ = 1683776160. Its totient is φ = 418231040.

The previous prime is 852721783. The next prime is 852721817. The reversal of 852721808 is 808127258.

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 7 ways as a sum of consecutive naturals, for example, 717791 + ... + 718977.

It is an arithmetic number, because the mean of its divisors is an integer number (42094404).

Almost surely, 2^852721808 is an apocalyptic number.

It is an amenable number.

852721808 is a deficient number, since it is larger than the sum of its proper divisors (831054352).

852721808 is a wasteful number, since it uses less digits than its factorization.

852721808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 852721808 is about 29201.4007883184. The cubic root of 852721808 is about 948.2782509724.

The spelling of 852721808 in words is "eight hundred fifty-two million, seven hundred twenty-one thousand, eight hundred eight".