243690735 has 16 divisors (see below), whose sum is σ = 390132864. Its totient is φ = 129892512.

The previous prime is 243690731. The next prime is 243690743. The reversal of 243690735 is 537096342.

It is not a de Polignac number, because 243690735 - 2² = 243690731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243690693 and 243690702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243690731) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30024 + ... + 37266.

It is an arithmetic number, because the mean of its divisors is an integer number (24383304).

Almost surely, 2^243690735 is an apocalyptic number.

243690735 is a deficient number, since it is larger than the sum of its proper divisors (146442129).

243690735 is a wasteful number, since it uses less digits than its factorization.

243690735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494.

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 243690735 is about 15610.5968816058. The cubic root of 243690735 is about 624.6158578107.

The spelling of 243690735 in words is "two hundred forty-three million, six hundred ninety thousand, seven hundred thirty-five".