818244 has 72 divisors (see below), whose sum is σ = 2515968. Its totient is φ = 218880.

The previous prime is 818239. The next prime is 818249. The reversal of 818244 is 442818.

It is an interprime number because it is at equal distance from previous prime (818239) and next prime (818249).

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 818244.

It is not an unprimeable number, because it can be changed into a prime (818249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4189 + ... + 4379.

It is an arithmetic number, because the mean of its divisors is an integer number (34944).

2⁸¹⁸²⁴⁴ is an apocalyptic number.

818244 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257984).

818244 is an abundant number, since it is smaller than the sum of its proper divisors (1697724).

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

818244 is a wasteful number, since it uses less digits than its factorization.

818244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 220 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 818244 is about 904.5684053735. The cubic root of 818244 is about 93.5321555258.

The spelling of 818244 in words is "eight hundred eighteen thousand, two hundred forty-four".