243726916 has 6 divisors (see below), whose sum is σ = 426522110. Its totient is φ = 121863456.

The previous prime is 243726911. The next prime is 243726947. The reversal of 243726916 is 619627342.

It is a happy number.

243726916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141514816 + 102212100 = 11896^2 + 10110^2 .

It is not an unprimeable number, because it can be changed into a prime (243726911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30465861 + ... + 30465868.

Almost surely, 2^243726916 is an apocalyptic number.

It is an amenable number.

243726916 is a deficient number, since it is larger than the sum of its proper divisors (182795194).

243726916 is a wasteful number, since it uses less digits than its factorization.

243726916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60931733 (or 60931731 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 243726916 is about 15611.7556988316. The cubic root of 243726916 is about 624.6467687219.

The spelling of 243726916 in words is "two hundred forty-three million, seven hundred twenty-six thousand, nine hundred sixteen".