243310816 has 96 divisors (see below), whose sum is σ = 580995072. Its totient is φ = 98081280.

The previous prime is 243310807. The next prime is 243310849. The reversal of 243310816 is 618013342.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 256455 + ... + 257401.

It is an arithmetic number, because the mean of its divisors is an integer number (6052032).

Almost surely, 2^243310816 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 243310816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290497536).

243310816 is an abundant number, since it is smaller than the sum of its proper divisors (337684256).

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

243310816 is a wasteful number, since it uses less digits than its factorization.

243310816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 243310816 is about 15598.4235100859. The cubic root of 243310816 is about 624.2910925444.

The spelling of 243310816 in words is "two hundred forty-three million, three hundred ten thousand, eight hundred sixteen".