304256749 has 2 divisors, whose sum is σ = 304256750. Its totient is φ = 304256748.

The previous prime is 304256741. The next prime is 304256761. The reversal of 304256749 is 947652403.

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., 200420649 + 103836100 = 14157^2 + 10190^2 .

It is a cyclic number.

It is not a de Polignac number, because 304256749 - 2³ = 304256741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304256741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152128374 + 152128375.

It is an arithmetic number, because the mean of its divisors is an integer number (152128375).

Almost surely, 2^304256749 is an apocalyptic number.

It is an amenable number.

304256749 is a deficient number, since it is larger than the sum of its proper divisors (1).

304256749 is an equidigital number, since it uses as much as digits as its factorization.

304256749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 304256749 is about 17442.9570027562. The cubic root of 304256749 is about 672.5843227922.

The spelling of 304256749 in words is "three hundred four million, two hundred fifty-six thousand, seven hundred forty-nine".