303072945 has 16 divisors (see below), whose sum is σ = 554190720. Its totient is φ = 138547584.

The previous prime is 303072941. The next prime is 303072947. The reversal of 303072945 is 549270303.

It is a happy number.

It is not a de Polignac number, because 303072945 - 2² = 303072941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (303072941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1443100 + ... + 1443309.

It is an arithmetic number, because the mean of its divisors is an integer number (34636920).

Almost surely, 2^303072945 is an apocalyptic number.

303072945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

303072945 is a deficient number, since it is larger than the sum of its proper divisors (251117775).

303072945 is a wasteful number, since it uses less digits than its factorization.

303072945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886424.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 303072945 is about 17408.9903498164. The cubic root of 303072945 is about 671.7108906415.

The spelling of 303072945 in words is "three hundred three million, seventy-two thousand, nine hundred forty-five".