818144 has 24 divisors (see below), whose sum is σ = 1656648. Its totient is φ = 397440.

The previous prime is 818143. The next prime is 818171. The reversal of 818144 is 441818.

It is a super-3 number, since 3×818144³ = 1642897633371389952, which contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (69027).

2⁸¹⁸¹⁴⁴ 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 818144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828324).

818144 is an abundant number, since it is smaller than the sum of its proper divisors (838504).

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

818144 is a wasteful number, since it uses less digits than its factorization.

818144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 730 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 818144 is about 904.5131287052. The cubic root of 818144 is about 93.5283450908.

It can be divided in two parts, 81814 and 4, that added together give a palindrome (81818).

The spelling of 818144 in words is "eight hundred eighteen thousand, one hundred forty-four".