306838 has 24 divisors (see below), whose sum is σ = 558144. Its totient is φ = 126000.

The previous prime is 306829. The next prime is 306847. The reversal of 306838 is 838603.

306838 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (306829) and next prime (306847).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2988 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (23256).

2³⁰⁶⁸³⁸ is an apocalyptic number.

306838 is a deficient number, since it is larger than the sum of its proper divisors (251306).

306838 is a wasteful number, since it uses less digits than its factorization.

306838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 306838 is about 553.9295984148. The cubic root of 306838 is about 67.4480991067.

The spelling of 306838 in words is "three hundred six thousand, eight hundred thirty-eight".