305930 has 8 divisors (see below), whose sum is σ = 550692. Its totient is φ = 122368.

The previous prime is 305927. The next prime is 305933. The reversal of 305930 is 39503.

It is an interprime number because it is at equal distance from previous prime (305927) and next prime (305933).

It can be written as a sum of positive squares in 2 ways, for example, as 305809 + 121 = 553^2 + 11^2 .

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

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 305930.

It is not an unprimeable number, because it can be changed into a prime (305933) 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, 15287 + ... + 15306.

2³⁰⁵⁹³⁰ is an apocalyptic number.

305930 is a deficient number, since it is larger than the sum of its proper divisors (244762).

305930 is a wasteful number, since it uses less digits than its factorization.

305930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30600.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 305930 is about 553.1093924352. The cubic root of 305930 is about 67.3815022013.

The spelling of 305930 in words is "three hundred five thousand, nine hundred thirty".