306738 has 12 divisors (see below), whose sum is σ = 664638. Its totient is φ = 102240.

The previous prime is 306727. The next prime is 306739. The reversal of 306738 is 837603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 199809 + 106929 = 447^2 + 327^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306738.

It is not an unprimeable number, because it can be changed into a prime (306739) by changing a digit.

306738 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8503 + ... + 8538.

2³⁰⁶⁷³⁸ is an apocalyptic number.

306738 is an abundant number, since it is smaller than the sum of its proper divisors (357900).

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

306738 is a wasteful number, since it uses less digits than its factorization.

306738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17049 (or 17046 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 306738 is about 553.8393268810. The cubic root of 306738 is about 67.4407710892.

The spelling of 306738 in words is "three hundred six thousand, seven hundred thirty-eight".