243221046 has 16 divisors (see below), whose sum is σ = 489255984. Its totient is φ = 80604704.

The previous prime is 243221039. The next prime is 243221047. The reversal of 243221046 is 640122342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243221047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116121 + ... + 118196.

It is an arithmetic number, because the mean of its divisors is an integer number (30578499).

Almost surely, 2^243221046 is an apocalyptic number.

243221046 is an abundant number, since it is smaller than the sum of its proper divisors (246034938).

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

243221046 is a wasteful number, since it uses less digits than its factorization.

243221046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234495.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 243221046 is about 15595.5457102341. The cubic root of 243221046 is about 624.2143052947.

Adding to 243221046 its reverse (640122342), we get a palindrome (883343388).

The spelling of 243221046 in words is "two hundred forty-three million, two hundred twenty-one thousand, forty-six".