305442136 has 16 divisors (see below), whose sum is σ = 578609640. Its totient is φ = 151146240.

The previous prime is 305442133. The next prime is 305442161. The reversal of 305442136 is 631244503.

305442136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305442131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196030 + ... + 197581.

Almost surely, 2^305442136 is an apocalyptic number.

It is an amenable number.

305442136 is a deficient number, since it is larger than the sum of its proper divisors (273167504).

305442136 is a wasteful number, since it uses less digits than its factorization.

305442136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393714 (or 393710 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 305442136 is about 17476.9029292950. The cubic root of 305442136 is about 673.4566557332.

Adding to 305442136 its reverse (631244503), we get a palindrome (936686639).

The spelling of 305442136 in words is "three hundred five million, four hundred forty-two thousand, one hundred thirty-six".