306398 has 8 divisors (see below), whose sum is σ = 462240. Its totient is φ = 152320.

The previous prime is 306389. The next prime is 306407. The reversal of 306398 is 893603.

It is an interprime number because it is at equal distance from previous prime (306389) and next prime (306407).

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

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 306398.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306398.

It is an unprimeable number.

306398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (57780).

2³⁰⁶³⁹⁸ is an apocalyptic number.

306398 is a deficient number, since it is larger than the sum of its proper divisors (155842).

306398 is a wasteful number, since it uses less digits than its factorization.

306398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 306398 is about 553.5322935475. The cubic root of 306398 is about 67.4158439097.

The spelling of 306398 in words is "three hundred six thousand, three hundred ninety-eight".