857200218 has 80 divisors (see below), whose sum is σ = 2018064480. Its totient is φ = 242712288.

The previous prime is 857200213. The next prime is 857200229. The reversal of 857200218 is 812002758.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (857200213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2261553 + ... + 2261931.

It is an arithmetic number, because the mean of its divisors is an integer number (25225806).

Almost surely, 2^857200218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857200218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009032240).

857200218 is an abundant number, since it is smaller than the sum of its proper divisors (1160864262).

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

857200218 is a wasteful number, since it uses less digits than its factorization.

857200218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 857200218 is about 29277.9817951989. The cubic root of 857200218 is about 949.9354408575.

The spelling of 857200218 in words is "eight hundred fifty-seven million, two hundred thousand, two hundred eighteen".