243265680 has 400 divisors, whose sum is σ = 1002507264. Its totient is φ = 53498880.

The previous prime is 243265679. The next prime is 243265697. The reversal of 243265680 is 86562342.

243265680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 79 ways as a sum of consecutive naturals, for example, 1406074 + ... + 1406246.

Almost surely, 2^243265680 is an apocalyptic number.

243265680 is a gapful number since it is divisible by the number (20) 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 243265680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501253632).

243265680 is an abundant number, since it is smaller than the sum of its proper divisors (759241584).

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

243265680 is a wasteful number, since it uses less digits than its factorization.

243265680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 243265680 is about 15596.9766301037. The cubic root of 243265680 is about 624.2524865810.

The spelling of 243265680 in words is "two hundred forty-three million, two hundred sixty-five thousand, six hundred eighty".