918822 has 8 divisors (see below), whose sum is σ = 1837656. Its totient is φ = 306272.

The previous prime is 918793. The next prime is 918823. The reversal of 918822 is 228819.

It is a sphenic number, since it is the product of 3 distinct primes.

918822 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 918822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918823) by changing a digit.

918822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76563 + ... + 76574.

It is an arithmetic number, because the mean of its divisors is an integer number (229707).

2⁹¹⁸⁸²² is an apocalyptic number.

918822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

918822 is a wasteful number, since it uses less digits than its factorization.

918822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153142.

The product of its digits is 2304, while the sum is 30.

The square root of 918822 is about 958.5520330165. The cubic root of 918822 is about 97.2173536731.

The spelling of 918822 in words is "nine hundred eighteen thousand, eight hundred twenty-two".