304890945 has 8 divisors (see below), whose sum is σ = 487825536. Its totient is φ = 162608496.

The previous prime is 304890931. The next prime is 304890947. The reversal of 304890945 is 549098403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 304890945 - 2⁵ = 304890913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304890897 and 304890906.

It is not an unprimeable number, because it can be changed into a prime (304890947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10163017 + ... + 10163046.

It is an arithmetic number, because the mean of its divisors is an integer number (60978192).

Almost surely, 2^304890945 is an apocalyptic number.

It is an amenable number.

304890945 is a deficient number, since it is larger than the sum of its proper divisors (182934591).

304890945 is a wasteful number, since it uses less digits than its factorization.

304890945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20326071.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 304890945 is about 17461.1266818611. The cubic root of 304890945 is about 673.0513124455.

The spelling of 304890945 in words is "three hundred four million, eight hundred ninety thousand, nine hundred forty-five".