243020544 has 144 divisors (see below), whose sum is σ = 706357344. Its totient is φ = 73728000.

The previous prime is 243020527. The next prime is 243020567. The reversal of 243020544 is 445020342.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

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, 1008264 + ... + 1008504.

Almost surely, 2^243020544 is an apocalyptic number.

243020544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243020544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353178672).

243020544 is an abundant number, since it is smaller than the sum of its proper divisors (463336800).

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

243020544 is a wasteful number, since it uses less digits than its factorization.

243020544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 243020544 is about 15589.1162033003. The cubic root of 243020544 is about 624.0427321163.

Adding to 243020544 its reverse (445020342), we get a palindrome (688040886).

The spelling of 243020544 in words is "two hundred forty-three million, twenty thousand, five hundred forty-four".