304228409 has 8 divisors (see below), whose sum is σ = 307668480. Its totient is φ = 300807936.

The previous prime is 304228403. The next prime is 304228423. The reversal of 304228409 is 904822403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304228409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (304228403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27512 + ... + 36950.

It is an arithmetic number, because the mean of its divisors is an integer number (38458560).

Almost surely, 2^304228409 is an apocalyptic number.

It is an amenable number.

304228409 is a deficient number, since it is larger than the sum of its proper divisors (3440071).

304228409 is a wasteful number, since it uses less digits than its factorization.

304228409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9799.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 304228409 is about 17442.1446215768. The cubic root of 304228409 is about 672.5634395177.

The spelling of 304228409 in words is "three hundred four million, two hundred twenty-eight thousand, four hundred nine".