243193968 has 40 divisors (see below), whose sum is σ = 698058000. Its totient is φ = 81064512.

The previous prime is 243193931. The next prime is 243193969. The reversal of 243193968 is 869391342.

It is a happy number.

243193968 is a `hidden beast` number, since 243 + 19 + 396 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243193969) 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, 281043 + ... + 281906.

It is an arithmetic number, because the mean of its divisors is an integer number (17451450).

Almost surely, 2^243193968 is an apocalyptic number.

It is an amenable number.

243193968 is an abundant number, since it is smaller than the sum of its proper divisors (454864032).

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

243193968 is a wasteful number, since it uses less digits than its factorization.

243193968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562966 (or 562954 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 243193968 is about 15594.6775535758. The cubic root of 243193968 is about 624.1911396702.

The spelling of 243193968 in words is "two hundred forty-three million, one hundred ninety-three thousand, nine hundred sixty-eight".