850436220 has 96 divisors (see below), whose sum is σ = 2529576000. Its totient is φ = 212742144.

The previous prime is 850436183. The next prime is 850436243. The reversal of 850436220 is 22634058.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354786 + ... + 357174.

It is an arithmetic number, because the mean of its divisors is an integer number (26349750).

Almost surely, 2^850436220 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 850436220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264788000).

850436220 is an abundant number, since it is smaller than the sum of its proper divisors (1679139780).

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

850436220 is a wasteful number, since it uses less digits than its factorization.

850436220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 850436220 is about 29162.2396259272. The cubic root of 850436220 is about 947.4302554929.

The spelling of 850436220 in words is "eight hundred fifty million, four hundred thirty-six thousand, two hundred twenty".