304219966 has 4 divisors (see below), whose sum is σ = 456329952. Its totient is φ = 152109982.

The previous prime is 304219961. The next prime is 304219997. The reversal of 304219966 is 669912403.

304219966 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304219961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76054990 + ... + 76054993.

It is an arithmetic number, because the mean of its divisors is an integer number (114082488).

Almost surely, 2^304219966 is an apocalyptic number.

304219966 is a deficient number, since it is larger than the sum of its proper divisors (152109986).

304219966 is a wasteful number, since it uses less digits than its factorization.

304219966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152109985.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 304219966 is about 17441.9025911739. The cubic root of 304219966 is about 672.5572177608.

The spelling of 304219966 in words is "three hundred four million, two hundred nineteen thousand, nine hundred sixty-six".