306440204 has 24 divisors (see below), whose sum is σ = 613390848. Its totient is φ = 131222160.

The previous prime is 306440143. The next prime is 306440213. The reversal of 306440204 is 402044603.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 306440204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35999 + ... + 43689.

It is an arithmetic number, because the mean of its divisors is an integer number (25557952).

Almost surely, 2^306440204 is an apocalyptic number.

It is an amenable number.

306440204 is an abundant number, since it is smaller than the sum of its proper divisors (306950644).

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

306440204 is a wasteful number, since it uses less digits than its factorization.

306440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125 (or 9123 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 306440204 is about 17505.4335564704. The cubic root of 306440204 is about 674.1893910795.

Adding to 306440204 its reverse (402044603), we get a palindrome (708484807).

The spelling of 306440204 in words is "three hundred six million, four hundred forty thousand, two hundred four".