305805030 has 64 divisors (see below), whose sum is σ = 760071168. Its totient is φ = 78693120.

The previous prime is 305805011. The next prime is 305805053. The reversal of 305805030 is 30508503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101445 + ... + 104415.

It is an arithmetic number, because the mean of its divisors is an integer number (11876112).

Almost surely, 2^305805030 is an apocalyptic number.

305805030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 305805030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380035584).

305805030 is an abundant number, since it is smaller than the sum of its proper divisors (454266138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305805030 is a wasteful number, since it uses less digits than its factorization.

305805030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 305805030 is about 17487.2819500344. The cubic root of 305805030 is about 673.7232601373.

The spelling of 305805030 in words is "three hundred five million, eight hundred five thousand, thirty".