818532 has 96 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 224640.

The previous prime is 818509. The next prime is 818561. The reversal of 818532 is 235818.

It is a happy number.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 818496 and 818505.

It is an unprimeable number.

818532 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 31 ways as a sum of consecutive naturals, for example, 15418 + ... + 15470.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2⁸¹⁸⁵³² 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 818532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

818532 is an abundant number, since it is smaller than the sum of its proper divisors (1721628).

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

818532 is a wasteful number, since it uses less digits than its factorization.

818532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 82 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 818532 is about 904.7275833089. The cubic root of 818532 is about 93.5431278442.

The spelling of 818532 in words is "eight hundred eighteen thousand, five hundred thirty-two".