985218 has 32 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 284928.

The previous prime is 985213. The next prime is 985219. The reversal of 985218 is 812589.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985218.

It is not an unprimeable number, because it can be changed into a prime (985213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁹⁸⁵²¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928).

985218 is an abundant number, since it is smaller than the sum of its proper divisors (1264638).

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

985218 is a wasteful number, since it uses less digits than its factorization.

985218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its digits is 5760, while the sum is 33.

The square root of 985218 is about 992.5814828013. The cubic root of 985218 is about 99.5048186685.

It can be divided in two parts, 9852 and 18, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 985218 in words is "nine hundred eighty-five thousand, two hundred eighteen".