240822 has 24 divisors (see below), whose sum is σ = 553176. Its totient is φ = 75456.

The previous prime is 240811. The next prime is 240829. The reversal of 240822 is 228042.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 240795 and 240804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240829) by changing a digit.

240822 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 11 ways as a sum of consecutive naturals, for example, 88 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (23049).

2²⁴⁰⁸²² is an apocalyptic number.

240822 is an abundant number, since it is smaller than the sum of its proper divisors (312354).

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

240822 is a wasteful number, since it uses less digits than its factorization.

240822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 240822 is about 490.7361816699. The cubic root of 240822 is about 62.2155177489.

Adding to 240822 its reverse (228042), we get a palindrome (468864).

The spelling of 240822 in words is "two hundred forty thousand, eight hundred twenty-two".