304428997 has 2 divisors, whose sum is σ = 304428998. Its totient is φ = 304428996.

The previous prime is 304428991. The next prime is 304429009. The reversal of 304428997 is 799824403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219217636 + 85211361 = 14806^2 + 9231^2 .

It is a cyclic number.

It is not a de Polignac number, because 304428997 - 2¹⁹ = 303904709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304428991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152214498 + 152214499.

It is an arithmetic number, because the mean of its divisors is an integer number (152214499).

Almost surely, 2^304428997 is an apocalyptic number.

It is an amenable number.

304428997 is a deficient number, since it is larger than the sum of its proper divisors (1).

304428997 is an equidigital number, since it uses as much as digits as its factorization.

304428997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 304428997 is about 17447.8937697362. The cubic root of 304428997 is about 672.7112215923.

It can be divided in two parts, 3044 and 28997, that added together give a square (32041 = 179²).

The spelling of 304428997 in words is "three hundred four million, four hundred twenty-eight thousand, nine hundred ninety-seven".