243778156 has 6 divisors (see below), whose sum is σ = 426611780. Its totient is φ = 121889076.

The previous prime is 243778099. The next prime is 243778259. The reversal of 243778156 is 651877342.

243778156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30472266 + ... + 30472273.

Almost surely, 2^243778156 is an apocalyptic number.

It is an amenable number.

243778156 is a deficient number, since it is larger than the sum of its proper divisors (182833624).

243778156 is a wasteful number, since it uses less digits than its factorization.

243778156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60944543 (or 60944541 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 243778156 is about 15613.3966836176. The cubic root of 243778156 is about 624.6905399204.

The spelling of 243778156 in words is "two hundred forty-three million, seven hundred seventy-eight thousand, one hundred fifty-six".