305404330 has 32 divisors (see below), whose sum is σ = 685376640. Its totient is φ = 95190720.

The previous prime is 305404321. The next prime is 305404331. The reversal of 305404330 is 33404503.

305404330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (305404331) 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, 197545 + ... + 199084.

It is an arithmetic number, because the mean of its divisors is an integer number (21418020).

Almost surely, 2^305404330 is an apocalyptic number.

305404330 is an abundant number, since it is smaller than the sum of its proper divisors (379972310).

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

305404330 is a wasteful number, since it uses less digits than its factorization.

305404330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396654.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 305404330 is about 17475.8212968661. The cubic root of 305404330 is about 673.4288689613.

Adding to 305404330 its reverse (33404503), we get a palindrome (338808833).

The spelling of 305404330 in words is "three hundred five million, four hundred four thousand, three hundred thirty".