243728983 has 16 divisors (see below), whose sum is σ = 262586880. Its totient is φ = 225403776.

The previous prime is 243728929. The next prime is 243728993. The reversal of 243728983 is 389827342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243728983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243728923) 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, 465760 + ... + 466282.

It is an arithmetic number, because the mean of its divisors is an integer number (16411680).

Almost surely, 2^243728983 is an apocalyptic number.

243728983 is a deficient number, since it is larger than the sum of its proper divisors (18857897).

243728983 is a wasteful number, since it uses less digits than its factorization.

243728983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its digits is 580608, while the sum is 46.

The square root of 243728983 is about 15611.8218988048. The cubic root of 243728983 is about 624.6485345523.

The spelling of 243728983 in words is "two hundred forty-three million, seven hundred twenty-eight thousand, nine hundred eighty-three".