243243822 has 16 divisors (see below), whose sum is σ = 503263440. Its totient is φ = 78285312.

The previous prime is 243243821. The next prime is 243243823. The reversal of 243243822 is 228342342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243243821) and next prime (243243823).

It is a self number, because there is not a number n which added to its sum of digits gives 243243822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243243821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698803 + ... + 699150.

It is an arithmetic number, because the mean of its divisors is an integer number (31453965).

Almost surely, 2^243243822 is an apocalyptic number.

243243822 is an abundant number, since it is smaller than the sum of its proper divisors (260019618).

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

243243822 is a wasteful number, since it uses less digits than its factorization.

243243822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397987.

The product of its digits is 18432, while the sum is 30.

The square root of 243243822 is about 15596.2759016375. The cubic root of 243243822 is about 624.2337891640.

The spelling of 243243822 in words is "two hundred forty-three million, two hundred forty-three thousand, eight hundred twenty-two".