243969378 has 32 divisors (see below), whose sum is σ = 503390400. Its totient is φ = 78788160.

The previous prime is 243969377. The next prime is 243969389. The reversal of 243969378 is 873969342.

243969378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 243969378.

It is not an unprimeable number, because it can be changed into a prime (243969371) 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, 19548 + ... + 29496.

It is an arithmetic number, because the mean of its divisors is an integer number (15730950).

Almost surely, 2^243969378 is an apocalyptic number.

243969378 is an abundant number, since it is smaller than the sum of its proper divisors (259421022).

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

243969378 is a wasteful number, since it uses less digits than its factorization.

243969378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10082.

The product of its digits is 1959552, while the sum is 51.

The square root of 243969378 is about 15619.5191347237. The cubic root of 243969378 is about 624.8538350466.

It can be divided in two parts, 2439 and 69378, that added together give a palindrome (71817).

The spelling of 243969378 in words is "two hundred forty-three million, nine hundred sixty-nine thousand, three hundred seventy-eight".