243786136 has 32 divisors (see below), whose sum is σ = 499322880. Its totient is φ = 110663200.

The previous prime is 243786119. The next prime is 243786149. The reversal of 243786136 is 631687342.

243786136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89385 + ... + 92071.

It is an arithmetic number, because the mean of its divisors is an integer number (15603840).

Almost surely, 2^243786136 is an apocalyptic number.

It is an amenable number.

243786136 is an abundant number, since it is smaller than the sum of its proper divisors (255536744).

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

243786136 is a wasteful number, since it uses less digits than its factorization.

243786136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735 (or 3731 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 243786136 is about 15613.6522313007. The cubic root of 243786136 is about 624.6973561944.

The spelling of 243786136 in words is "two hundred forty-three million, seven hundred eighty-six thousand, one hundred thirty-six".