8385220 has 12 divisors (see below), whose sum is σ = 17609004. Its totient is φ = 3354080.

The previous prime is 8385217. The next prime is 8385239. The reversal of 8385220 is 225838.

It can be written as a sum of positive squares in 2 ways, for example, as 4393216 + 3992004 = 2096^2 + 1998^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209611 + ... + 209650.

It is an arithmetic number, because the mean of its divisors is an integer number (1467417).

Almost surely, 2^8385220 is an apocalyptic number.

It is an amenable number.

8385220 is an abundant number, since it is smaller than the sum of its proper divisors (9223784).

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

8385220 is a wasteful number, since it uses less digits than its factorization.

8385220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419270 (or 419268 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 8385220 is about 2895.7244344032. The cubic root of 8385220 is about 203.1599764622.

The spelling of 8385220 in words is "eight million, three hundred eighty-five thousand, two hundred twenty".