8730945 has 48 divisors (see below), whose sum is σ = 16325712. Its totient is φ = 4300800.

The previous prime is 8730929. The next prime is 8730947. The reversal of 8730945 is 5490378.

It can be written as a sum of positive squares in 8 ways, for example, as 16641 + 8714304 = 129^2 + 2952^2 .

It is not a de Polignac number, because 8730945 - 2⁴ = 8730929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8730947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77209 + ... + 77321.

It is an arithmetic number, because the mean of its divisors is an integer number (340119).

Almost surely, 2^8730945 is an apocalyptic number.

8730945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8730945 is a deficient number, since it is larger than the sum of its proper divisors (7594767).

8730945 is a wasteful number, since it uses less digits than its factorization.

8730945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 8730945 is about 2954.8172532324. The cubic root of 8730945 is about 205.9145732446.

The spelling of 8730945 in words is "eight million, seven hundred thirty thousand, nine hundred forty-five".