305030052 has 36 divisors (see below), whose sum is σ = 785601180. Its totient is φ = 99757632.

The previous prime is 305030051. The next prime is 305030057. The reversal of 305030052 is 250030503.

It can be written as a sum of positive squares in 2 ways, for example, as 251095716 + 53934336 = 15846^2 + 7344^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (305030051) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 78027 + ... + 81842.

It is an arithmetic number, because the mean of its divisors is an integer number (21822255).

Almost surely, 2^305030052 is an apocalyptic number.

It is an amenable number.

305030052 is an abundant number, since it is smaller than the sum of its proper divisors (480571128).

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

305030052 is a wasteful number, since it uses less digits than its factorization.

305030052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159932 (or 159927 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 305030052 is about 17465.1095616375. The cubic root of 305030052 is about 673.1536571418.

Adding to 305030052 its reverse (250030503), we get a palindrome (555060555).

The spelling of 305030052 in words is "three hundred five million, thirty thousand, fifty-two".