304649 has 4 divisors (see below), whose sum is σ = 309264. Its totient is φ = 300036.

The previous prime is 304643. The next prime is 304651. The reversal of 304649 is 946403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 304649 - 2⁸ = 304393 is a prime.

It is a super-2 number, since 2×304649² = 185622026402, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (304643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (77316).

2³⁰⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

304649 is a deficient number, since it is larger than the sum of its proper divisors (4615).

304649 is an equidigital number, since it uses as much as digits as its factorization.

304649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 304649 is about 551.9501789111. The cubic root of 304649 is about 67.2873232933.

The spelling of 304649 in words is "three hundred four thousand, six hundred forty-nine".