243388068 has 192 divisors, whose sum is σ = 758661120. Its totient is φ = 58867200.

The previous prime is 243388051. The next prime is 243388091. The reversal of 243388068 is 860883342.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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, 830530 + ... + 830822.

It is an arithmetic number, because the mean of its divisors is an integer number (3951360).

Almost surely, 2^243388068 is an apocalyptic number.

243388068 is a gapful number since it is divisible by the number (28) 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 243388068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379330560).

243388068 is an abundant number, since it is smaller than the sum of its proper divisors (515273052).

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

243388068 is a wasteful number, since it uses less digits than its factorization.

243388068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 243388068 is about 15600.8995894468. The cubic root of 243388068 is about 624.3571570581.

The spelling of 243388068 in words is "two hundred forty-three million, three hundred eighty-eight thousand, sixty-eight".