243308160 has 192 divisors, whose sum is σ = 857099880. Its totient is φ = 63578112.

The previous prime is 243308141. The next prime is 243308201. The reversal of 243308160 is 61803342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 213627456 + 29680704 = 14616^2 + 5448^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304882 + ... + 305678.

Almost surely, 2^243308160 is an apocalyptic number.

243308160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243308160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428549940).

243308160 is an abundant number, since it is smaller than the sum of its proper divisors (613791720).

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

243308160 is a wasteful number, since it uses less digits than its factorization.

243308160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 243308160 is about 15598.3383730447. The cubic root of 243308160 is about 624.2888209325.

The spelling of 243308160 in words is "two hundred forty-three million, three hundred eight thousand, one hundred sixty".