20730011 has 2 divisors, whose sum is σ = 20730012. Its totient is φ = 20730010.

The previous prime is 20729993. The next prime is 20730037. The reversal of 20730011 is 11003702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20730011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20700011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10365005 + 10365006.

It is an arithmetic number, because the mean of its divisors is an integer number (10365006).

Almost surely, 2^20730011 is an apocalyptic number.

20730011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20730011 is an equidigital number, since it uses as much as digits as its factorization.

20730011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20730011 is about 4553.0221831219. The cubic root of 20730011 is about 274.7049662308.

Adding to 20730011 its reverse (11003702), we get a palindrome (31733713).

The spelling of 20730011 in words is "twenty million, seven hundred thirty thousand, eleven".