243528064 has 64 divisors (see below), whose sum is σ = 539441280. Its totient is φ = 108748800.

The previous prime is 243528037. The next prime is 243528067. The reversal of 243528064 is 460825342.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243528067) 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, 49224 + ... + 53944.

It is an arithmetic number, because the mean of its divisors is an integer number (8428770).

Almost surely, 2^243528064 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 243528064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269720640).

243528064 is an abundant number, since it is smaller than the sum of its proper divisors (295913216).

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

243528064 is a wasteful number, since it uses less digits than its factorization.

243528064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779 (or 4767 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 243528064 is about 15605.3857369820. The cubic root of 243528064 is about 624.4768434938.

The spelling of 243528064 in words is "two hundred forty-three million, five hundred twenty-eight thousand, sixty-four".