305064020 has 12 divisors (see below), whose sum is σ = 640634484. Its totient is φ = 122025600.

The previous prime is 305064013. The next prime is 305064047. The reversal of 305064020 is 20460503.

It can be written as a sum of positive squares in 2 ways, for example, as 95335696 + 209728324 = 9764^2 + 14482^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 15253201 = 305064020 / (3 + 0 + 5 + 0 + 6 + 4 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 305063983 and 305064001.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7626581 + ... + 7626620.

It is an arithmetic number, because the mean of its divisors is an integer number (53386207).

Almost surely, 2^305064020 is an apocalyptic number.

It is an amenable number.

305064020 is an abundant number, since it is smaller than the sum of its proper divisors (335570464).

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

305064020 is a wasteful number, since it uses less digits than its factorization.

305064020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253210 (or 15253208 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305064020 is about 17466.0819876697. The cubic root of 305064020 is about 673.1786435703.

The spelling of 305064020 in words is "three hundred five million, sixty-four thousand, twenty".