243500868 has 72 divisors (see below), whose sum is σ = 675439128. Its totient is φ = 73502208.

The previous prime is 243500813. The next prime is 243500891. The reversal of 243500868 is 868005342.

243500868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 92505924 + 150994944 = 9618^2 + 12288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 19896 + ... + 29712.

It is an arithmetic number, because the mean of its divisors is an integer number (9381099).

Almost surely, 2^243500868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243500868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337719564).

243500868 is an abundant number, since it is smaller than the sum of its proper divisors (431938260).

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

243500868 is a wasteful number, since it uses less digits than its factorization.

243500868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9893 (or 9888 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 243500868 is about 15604.5143468164. The cubic root of 243500868 is about 624.4535964750.

The spelling of 243500868 in words is "two hundred forty-three million, five hundred thousand, eight hundred sixty-eight".