243981288 has 64 divisors (see below), whose sum is σ = 679588800. Its totient is φ = 81103680.

The previous prime is 243981281. The next prime is 243981289. The reversal of 243981288 is 882189342.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (243981281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89595 + ... + 92277.

It is an arithmetic number, because the mean of its divisors is an integer number (10618575).

Almost surely, 2^243981288 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 243981288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339794400).

243981288 is an abundant number, since it is smaller than the sum of its proper divisors (435607512).

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

243981288 is a wasteful number, since it uses less digits than its factorization.

243981288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119 (or 3109 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 243981288 is about 15619.9003838053. The cubic root of 243981288 is about 624.8640028364.

The spelling of 243981288 in words is "two hundred forty-three million, nine hundred eighty-one thousand, two hundred eighty-eight".