304128497 has 16 divisors (see below), whose sum is σ = 324168960. Its totient is φ = 284519952.

The previous prime is 304128491. The next prime is 304128499. The reversal of 304128497 is 794821403.

It is a cyclic number.

It is not a de Polignac number, because 304128497 - 2¹⁴ = 304112113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304128497.

It is not an unprimeable number, because it can be changed into a prime (304128491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876278 + ... + 876624.

It is an arithmetic number, because the mean of its divisors is an integer number (20260560).

Almost surely, 2^304128497 is an apocalyptic number.

It is an amenable number.

304128497 is a deficient number, since it is larger than the sum of its proper divisors (20040463).

304128497 is a wasteful number, since it uses less digits than its factorization.

304128497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 304128497 is about 17439.2802890486. The cubic root of 304128497 is about 672.4898056801.

The spelling of 304128497 in words is "three hundred four million, one hundred twenty-eight thousand, four hundred ninety-seven".