243799968 has 24 divisors (see below), whose sum is σ = 639975168. Its totient is φ = 81266624.

The previous prime is 243799957. The next prime is 243799979. The reversal of 243799968 is 869997342.

It is an interprime number because it is at equal distance from previous prime (243799957) and next prime (243799979).

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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, 1269696 + ... + 1269887.

It is an arithmetic number, because the mean of its divisors is an integer number (26665632).

Almost surely, 2^243799968 is an apocalyptic number.

It is an amenable number.

243799968 is an abundant number, since it is smaller than the sum of its proper divisors (396175200).

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

243799968 is a wasteful number, since it uses less digits than its factorization.

243799968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539596 (or 2539588 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 57.

The square root of 243799968 is about 15614.0951707103. The cubic root of 243799968 is about 624.7091707170.

The spelling of 243799968 in words is "two hundred forty-three million, seven hundred ninety-nine thousand, nine hundred sixty-eight".