243436656 has 20 divisors (see below), whose sum is σ = 628878152. Its totient is φ = 81145536.

The previous prime is 243436637. The next prime is 243436657. The reversal of 243436656 is 656634342.

It is a super-2 number, since 2×243436656² = 118522810968924672, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243436657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535751 + ... + 2535846.

Almost surely, 2^243436656 is an apocalyptic number.

It is an amenable number.

243436656 is an abundant number, since it is smaller than the sum of its proper divisors (385441496).

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

243436656 is a wasteful number, since it uses less digits than its factorization.

243436656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071608 (or 5071602 counting only the distinct ones).

The product of its digits is 311040, while the sum is 39.

The square root of 243436656 is about 15602.4567296308. The cubic root of 243436656 is about 624.3987014763.

The spelling of 243436656 in words is "two hundred forty-three million, four hundred thirty-six thousand, six hundred fifty-six".