20730111 has 8 divisors (see below), whose sum is σ = 27793584. Its totient is φ = 13743360.

The previous prime is 20730109. The next prime is 20730119. The reversal of 20730111 is 11103702.

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

It is not a de Polignac number, because 20730111 - 2¹ = 20730109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18546 + ... + 19631.

It is an arithmetic number, because the mean of its divisors is an integer number (3474198).

Almost surely, 2^20730111 is an apocalyptic number.

20730111 is a deficient number, since it is larger than the sum of its proper divisors (7063473).

20730111 is a wasteful number, since it uses less digits than its factorization.

20730111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38361.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 20730111 is about 4553.0331648254. The cubic root of 20730111 is about 274.7054079488.

Adding to 20730111 its reverse (11103702), we get a palindrome (31833813).

The spelling of 20730111 in words is "twenty million, seven hundred thirty thousand, one hundred eleven".