243648930 has 128 divisors (see below), whose sum is σ = 714147840. Its totient is φ = 51932160.

The previous prime is 243648929. The next prime is 243648931. The reversal of 243648930 is 39846342.

It is an interprime number because it is at equal distance from previous prime (243648929) and next prime (243648931).

It is not an unprimeable number, because it can be changed into a prime (243648931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 495985 + ... + 496475.

It is an arithmetic number, because the mean of its divisors is an integer number (5579280).

Almost surely, 2^243648930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243648930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357073920).

243648930 is an abundant number, since it is smaller than the sum of its proper divisors (470498910).

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

243648930 is a wasteful number, since it uses less digits than its factorization.

243648930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 243648930 is about 15609.2578298906. The cubic root of 243648930 is about 624.5801382756.

The spelling of 243648930 in words is "two hundred forty-three million, six hundred forty-eight thousand, nine hundred thirty".