243220422 has 8 divisors (see below), whose sum is σ = 486440856. Its totient is φ = 81073472.

The previous prime is 243220421. The next prime is 243220447. The reversal of 243220422 is 224022342.

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

243220422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243220421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20268363 + ... + 20268374.

It is an arithmetic number, because the mean of its divisors is an integer number (60805107).

Almost surely, 2^243220422 is an apocalyptic number.

243220422 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.

243220422 is a wasteful number, since it uses less digits than its factorization.

243220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40536742.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 243220422 is about 15595.5257045090. The cubic root of 243220422 is about 624.2137714729.

Adding to 243220422 its reverse (224022342), we get a palindrome (467242764).

The spelling of 243220422 in words is "two hundred forty-three million, two hundred twenty thousand, four hundred twenty-two".