243248280 has 64 divisors (see below), whose sum is σ = 796089600. Its totient is φ = 58968960.

The previous prime is 243248261. The next prime is 243248281. The reversal of 243248280 is 82842342.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243248281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90820 + ... + 93459.

It is an arithmetic number, because the mean of its divisors is an integer number (12438900).

Almost surely, 2^243248280 is an apocalyptic number.

243248280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243248280 is an abundant number, since it is smaller than the sum of its proper divisors (552841320).

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

243248280 is a wasteful number, since it uses less digits than its factorization.

243248280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184304 (or 184300 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 243248280 is about 15596.4188197163. The cubic root of 243248280 is about 624.2376026453.

The spelling of 243248280 in words is "two hundred forty-three million, two hundred forty-eight thousand, two hundred eighty".