305030073 has 16 divisors (see below), whose sum is σ = 414027072. Its totient is φ = 199704000.

The previous prime is 305030057. The next prime is 305030083. The reversal of 305030073 is 370030503.

It is not a de Polignac number, because 305030073 - 2⁴ = 305030057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305030023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193378 + ... + 194948.

It is an arithmetic number, because the mean of its divisors is an integer number (25876692).

Almost surely, 2^305030073 is an apocalyptic number.

It is an amenable number.

305030073 is a deficient number, since it is larger than the sum of its proper divisors (108996999).

305030073 is a wasteful number, since it uses less digits than its factorization.

305030073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696.

The product of its (nonzero) digits is 945, while the sum is 21.

The square root of 305030073 is about 17465.1101628361. The cubic root of 305030073 is about 673.1536725897.

Adding to 305030073 its reverse (370030503), we get a palindrome (675060576).

The spelling of 305030073 in words is "three hundred five million, thirty thousand, seventy-three".