305124420 has 72 divisors (see below), whose sum is σ = 901744704. Its totient is φ = 77078592.

The previous prime is 305124403. The next prime is 305124473. The reversal of 305124420 is 24421503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14617 + ... + 28703.

It is an arithmetic number, because the mean of its divisors is an integer number (12524232).

Almost surely, 2^305124420 is an apocalyptic number.

305124420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450872352).

305124420 is an abundant number, since it is smaller than the sum of its proper divisors (596620284).

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

305124420 is a wasteful number, since it uses less digits than its factorization.

305124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137 (or 14116 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 305124420 is about 17467.8109676055. The cubic root of 305124420 is about 673.2230684606.

Adding to 305124420 its reverse (24421503), we get a palindrome (329545923).

The spelling of 305124420 in words is "three hundred five million, one hundred twenty-four thousand, four hundred twenty".