243990735 has 16 divisors (see below), whose sum is σ = 390674400. Its totient is φ = 130032000.

The previous prime is 243990727. The next prime is 243990757. The reversal of 243990735 is 537099342.

It is not a de Polignac number, because 243990735 - 2³ = 243990727 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 17985 + ... + 28485.

It is an arithmetic number, because the mean of its divisors is an integer number (24417150).

Almost surely, 2^243990735 is an apocalyptic number.

243990735 is a deficient number, since it is larger than the sum of its proper divisors (146683665).

243990735 is a wasteful number, since it uses less digits than its factorization.

243990735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12058.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 243990735 is about 15620.2027835749. The cubic root of 243990735 is about 624.8720676818.

The spelling of 243990735 in words is "two hundred forty-three million, nine hundred ninety thousand, seven hundred thirty-five".