304412021 has 16 divisors (see below), whose sum is σ = 316402368. Its totient is φ = 292723200.

The previous prime is 304411993. The next prime is 304412041. The reversal of 304412021 is 120214403.

It is a cyclic number.

It is not a de Polignac number, because 304412021 - 2¹⁸ = 304149877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304412041) 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, 862181 + ... + 862533.

It is an arithmetic number, because the mean of its divisors is an integer number (19775148).

Almost surely, 2^304412021 is an apocalyptic number.

It is an amenable number.

304412021 is a deficient number, since it is larger than the sum of its proper divisors (11990347).

304412021 is a wasteful number, since it uses less digits than its factorization.

304412021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 304412021 is about 17447.4072858978. The cubic root of 304412021 is about 672.6987171352.

Adding to 304412021 its reverse (120214403), we get a palindrome (424626424).

The spelling of 304412021 in words is "three hundred four million, four hundred twelve thousand, twenty-one".