243441564 has 48 divisors (see below), whose sum is σ = 605556000. Its totient is φ = 75851776.

The previous prime is 243441553. The next prime is 243441587. The reversal of 243441564 is 465144342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26392 + ... + 34400.

It is an arithmetic number, because the mean of its divisors is an integer number (12615750).

Almost surely, 2^243441564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243441564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302778000).

243441564 is an abundant number, since it is smaller than the sum of its proper divisors (362114436).

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

243441564 is a wasteful number, since it uses less digits than its factorization.

243441564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8182 (or 8180 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 243441564 is about 15602.6140117610. The cubic root of 243441564 is about 624.4028976784.

The spelling of 243441564 in words is "two hundred forty-three million, four hundred forty-one thousand, five hundred sixty-four".