243046340 has 48 divisors (see below), whose sum is σ = 534168432. Its totient is φ = 92791296.

The previous prime is 243046339. The next prime is 243046367. The reversal of 243046340 is 43640342.

It can be written as a sum of positive squares in 8 ways, for example, as 11276164 + 231770176 = 3358^2 + 15224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36122 + ... + 42318.

It is an arithmetic number, because the mean of its divisors is an integer number (11128509).

Almost surely, 2^243046340 is an apocalyptic number.

243046340 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 243046340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267084216).

243046340 is an abundant number, since it is smaller than the sum of its proper divisors (291122092).

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

243046340 is a wasteful number, since it uses less digits than its factorization.

243046340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296 (or 6294 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 243046340 is about 15589.9435534578. The cubic root of 243046340 is about 624.0648115072.

Adding to 243046340 its reverse (43640342), we get a palindrome (286686682).

The spelling of 243046340 in words is "two hundred forty-three million, forty-six thousand, three hundred forty".