243528065 has 16 divisors (see below), whose sum is σ = 319104576. Its totient is φ = 176942400.

The previous prime is 243528037. The next prime is 243528067. The reversal of 243528065 is 560825342.

It is not a de Polignac number, because 243528065 - 2⁶ = 243528001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243528067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105059 + ... + 107351.

It is an arithmetic number, because the mean of its divisors is an integer number (19944036).

Almost surely, 2^243528065 is an apocalyptic number.

It is an amenable number.

243528065 is a deficient number, since it is larger than the sum of its proper divisors (75576511).

243528065 is a wasteful number, since it uses less digits than its factorization.

243528065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 243528065 is about 15605.3857690222. The cubic root of 243528065 is about 624.4768443486.

The spelling of 243528065 in words is "two hundred forty-three million, five hundred twenty-eight thousand, sixty-five".