243412656 has 20 divisors (see below), whose sum is σ = 628816152. Its totient is φ = 81137536.

The previous prime is 243412649. The next prime is 243412661. The reversal of 243412656 is 656214342.

It is a super-2 number, since 2×243412656² = 118499442201948672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535501 + ... + 2535596.

Almost surely, 2^243412656 is an apocalyptic number.

It is an amenable number.

243412656 is an abundant number, since it is smaller than the sum of its proper divisors (385403496).

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

243412656 is a wasteful number, since it uses less digits than its factorization.

243412656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071108 (or 5071102 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 243412656 is about 15601.6876010257. The cubic root of 243412656 is about 624.3781813383.

Adding to 243412656 its reverse (656214342), we get a palindrome (899626998).

The spelling of 243412656 in words is "two hundred forty-three million, four hundred twelve thousand, six hundred fifty-six".