243780248 has 8 divisors (see below), whose sum is σ = 457087980. Its totient is φ = 121890120.

The previous prime is 243780247. The next prime is 243780263. The reversal of 243780248 is 842087342.

It is a happy number.

243780248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243780247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15236258 + ... + 15236273.

Almost surely, 2^243780248 is an apocalyptic number.

It is an amenable number.

243780248 is a deficient number, since it is larger than the sum of its proper divisors (213307732).

243780248 is a wasteful number, since it uses less digits than its factorization.

243780248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30472537 (or 30472533 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 243780248 is about 15613.4636772242. The cubic root of 243780248 is about 624.6923268578.

The spelling of 243780248 in words is "two hundred forty-three million, seven hundred eighty thousand, two hundred forty-eight".