305520412 has 12 divisors (see below), whose sum is σ = 538564320. Its totient is φ = 151644896.

The previous prime is 305520389. The next prime is 305520419. The reversal of 305520412 is 214025503.

305520412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305520419) 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, 278212 + ... + 279307.

It is an arithmetic number, because the mean of its divisors is an integer number (44880360).

Almost surely, 2^305520412 is an apocalyptic number.

It is an amenable number.

305520412 is a deficient number, since it is larger than the sum of its proper divisors (233043908).

305520412 is a wasteful number, since it uses less digits than its factorization.

305520412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557660 (or 557658 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 305520412 is about 17479.1421986321. The cubic root of 305520412 is about 673.5141799846.

Adding to 305520412 its reverse (214025503), we get a palindrome (519545915).

The spelling of 305520412 in words is "three hundred five million, five hundred twenty thousand, four hundred twelve".