243920572 has 24 divisors (see below), whose sum is σ = 488172384. Its totient is φ = 104466432.

The previous prime is 243920549. The next prime is 243920581. The reversal of 243920572 is 275029342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76188 + ... + 79324.

It is an arithmetic number, because the mean of its divisors is an integer number (20340516).

Almost surely, 2^243920572 is an apocalyptic number.

It is an amenable number.

243920572 is an abundant number, since it is smaller than the sum of its proper divisors (244251812).

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

243920572 is a wasteful number, since it uses less digits than its factorization.

243920572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925 (or 5923 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 243920572 is about 15617.9567165491. The cubic root of 243920572 is about 624.8121649945.

The spelling of 243920572 in words is "two hundred forty-three million, nine hundred twenty thousand, five hundred seventy-two".