304044000021 has 12 divisors (see below), whose sum is σ = 439870672800. Its totient is φ = 202374766440.

The previous prime is 304044000011. The next prime is 304044000031. The reversal of 304044000021 is 120000440403.

It is an interprime number because it is at equal distance from previous prime (304044000011) and next prime (304044000031).

It is not a de Polignac number, because 304044000021 - 2⁷ = 304043999893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 304043999958 and 304044000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304044000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26763471 + ... + 26774828.

It is an arithmetic number, because the mean of its divisors is an integer number (36655889400).

Almost surely, 2^304044000021 is an apocalyptic number.

It is an amenable number.

304044000021 is a deficient number, since it is larger than the sum of its proper divisors (135826672779).

304044000021 is a wasteful number, since it uses less digits than its factorization.

304044000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53538936 (or 53538933 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 304044000021 its reverse (120000440403), we get a palindrome (424044440424).

The spelling of 304044000021 in words is "three hundred four billion, forty-four million, twenty-one", and thus it is an aban number.