305304005 has 4 divisors (see below), whose sum is σ = 366364812. Its totient is φ = 244243200.

The previous prime is 305303981. The next prime is 305304007. The reversal of 305304005 is 500403503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48246916 + 257057089 = 6946^2 + 16033^2 .

It is not a de Polignac number, because 305304005 - 2⁶ = 305303941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305304007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30530396 + ... + 30530405.

It is an arithmetic number, because the mean of its divisors is an integer number (91591203).

Almost surely, 2^305304005 is an apocalyptic number.

It is an amenable number.

305304005 is a deficient number, since it is larger than the sum of its proper divisors (61060807).

305304005 is an equidigital number, since it uses as much as digits as its factorization.

305304005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61060806.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 305304005 is about 17472.9506666733. The cubic root of 305304005 is about 673.3551206611.

Adding to 305304005 its reverse (500403503), we get a palindrome (805707508).

It can be divided in two parts, 30 and 5304005, that added together give a palindrome (5304035).

The spelling of 305304005 in words is "three hundred five million, three hundred four thousand, five".