306006138 has 24 divisors (see below), whose sum is σ = 663338676. Its totient is φ = 101952000.

The previous prime is 306006133. The next prime is 306006139. The reversal of 306006138 is 831600603.

306006138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 306005049 + 1089 = 17493^2 + 33^2 .

It is not an unprimeable number, because it can be changed into a prime (306006133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61338 + ... + 66138.

Almost surely, 2^306006138 is an apocalyptic number.

306006138 is an abundant number, since it is smaller than the sum of its proper divisors (357332538).

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

306006138 is a wasteful number, since it uses less digits than its factorization.

306006138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8350 (or 8347 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 306006138 is about 17493.0311267087. The cubic root of 306006138 is about 673.8709157062.

The spelling of 306006138 in words is "three hundred six million, six thousand, one hundred thirty-eight".