306830 has 16 divisors (see below), whose sum is σ = 562464. Its totient is φ = 120480.

The previous prime is 306829. The next prime is 306847. The reversal of 306830 is 38603.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359 + ... + 861.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2³⁰⁶⁸³⁰ is an apocalyptic number.

306830 is a deficient number, since it is larger than the sum of its proper divisors (255634).

306830 is a wasteful number, since it uses less digits than its factorization.

306830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 306830 is about 553.9223772335. The cubic root of 306830 is about 67.4475129239.

The spelling of 306830 in words is "three hundred six thousand, eight hundred thirty".