20730698 has 8 divisors (see below), whose sum is σ = 31126980. Its totient is φ = 10355040.

The previous prime is 20730623. The next prime is 20730719. The reversal of 20730698 is 89603702.

It can be written as a sum of positive squares in 2 ways, for example, as 20133169 + 597529 = 4487^2 + 773^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333 + ... + 6848.

Almost surely, 2^20730698 is an apocalyptic number.

20730698 is a deficient number, since it is larger than the sum of its proper divisors (10396282).

20730698 is a wasteful number, since it uses less digits than its factorization.

20730698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10312.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20730698 is about 4553.0976268909. The cubic root of 20730698 is about 274.7080008043.

The spelling of 20730698 in words is "twenty million, seven hundred thirty thousand, six hundred ninety-eight".