304428869 has 4 divisors (see below), whose sum is σ = 304466880. Its totient is φ = 304390860.

The previous prime is 304428853. The next prime is 304428871. The reversal of 304428869 is 968824403.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 304428869 - 2⁴ = 304428853 is a prime.

It is a super-2 number, since 2×304428869² = 185353872561238322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304428829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799 + ... + 24740.

It is an arithmetic number, because the mean of its divisors is an integer number (76116720).

Almost surely, 2^304428869 is an apocalyptic number.

It is an amenable number.

304428869 is a deficient number, since it is larger than the sum of its proper divisors (38011).

304428869 is a wasteful number, since it uses less digits than its factorization.

304428869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38010.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 304428869 is about 17447.8901016713. The cubic root of 304428869 is about 672.7111273097.

It can be divided in two parts, 3044 and 28869, that added together give a palindrome (31913).

The spelling of 304428869 in words is "three hundred four million, four hundred twenty-eight thousand, eight hundred sixty-nine".