304490745 has 80 divisors (see below), whose sum is σ = 593252352. Its totient is φ = 148521600.

The previous prime is 304490743. The next prime is 304490801. The reversal of 304490745 is 547094403.

It is not a de Polignac number, because 304490745 - 2¹ = 304490743 is a prime.

It is a super-2 number, since 2×304490745² = 185429227581310050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (304490741) 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 79 ways as a sum of consecutive naturals, for example, 794824 + ... + 795206.

Almost surely, 2^304490745 is an apocalyptic number.

It is an amenable number.

304490745 is a deficient number, since it is larger than the sum of its proper divisors (288761607).

304490745 is a wasteful number, since it uses less digits than its factorization.

304490745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 304490745 is about 17449.6631772651. The cubic root of 304490745 is about 672.7567010142.

The spelling of 304490745 in words is "three hundred four million, four hundred ninety thousand, seven hundred forty-five".