20730316 has 12 divisors (see below), whose sum is σ = 36408232. Its totient is φ = 10327968.

The previous prime is 20730313. The next prime is 20730373. The reversal of 20730316 is 61303702.

It is not an unprimeable number, because it can be changed into a prime (20730313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8025 + ... + 10288.

Almost surely, 2^20730316 is an apocalyptic number.

It is an amenable number.

20730316 is a deficient number, since it is larger than the sum of its proper divisors (15677916).

20730316 is a wasteful number, since it uses less digits than its factorization.

20730316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18600 (or 18598 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 20730316 is about 4553.0556772348. The cubic root of 20730316 is about 274.7063134661.

The spelling of 20730316 in words is "twenty million, seven hundred thirty thousand, three hundred sixteen".