243451668 has 24 divisors (see below), whose sum is σ = 574439040. Its totient is φ = 80238400.

The previous prime is 243451661. The next prime is 243451709. The reversal of 243451668 is 866154342.

It is a super-3 number, since 3×243451668³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243451661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112908 + ... + 115043.

It is an arithmetic number, because the mean of its divisors is an integer number (23934960).

Almost surely, 2^243451668 is an apocalyptic number.

It is an amenable number.

243451668 is an abundant number, since it is smaller than the sum of its proper divisors (330987372).

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

243451668 is a wasteful number, since it uses less digits than its factorization.

243451668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228047 (or 228045 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 243451668 is about 15602.9378002990. The cubic root of 243451668 is about 624.4115361370.

The spelling of 243451668 in words is "two hundred forty-three million, four hundred fifty-one thousand, six hundred sixty-eight".