306826 has 8 divisors (see below), whose sum is σ = 495684. Its totient is φ = 141600.

The previous prime is 306821. The next prime is 306827. The reversal of 306826 is 628603.

It can be written as a sum of positive squares in 2 ways, for example, as 297025 + 9801 = 545^2 + 99^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 306826.

It is not an unprimeable number, because it can be changed into a prime (306821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5875 + ... + 5926.

2³⁰⁶⁸²⁶ is an apocalyptic number.

306826 is a deficient number, since it is larger than the sum of its proper divisors (188858).

306826 is a wasteful number, since it uses less digits than its factorization.

306826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11816.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 306826 is about 553.9187666075. The cubic root of 306826 is about 67.4472198287.

The spelling of 306826 in words is "three hundred six thousand, eight hundred twenty-six".