20306116 has 24 divisors (see below), whose sum is σ = 37142784. Its totient is φ = 9702240.

The previous prime is 20306113. The next prime is 20306129. The reversal of 20306116 is 61160302.

It is a junction number, because it is equal to n+sod(n) for n = 20306093 and 20306102.

It is not an unprimeable number, because it can be changed into a prime (20306113) 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, 9306 + ... + 11278.

It is an arithmetic number, because the mean of its divisors is an integer number (1547616).

Almost surely, 2^20306116 is an apocalyptic number.

It is an amenable number.

20306116 is a deficient number, since it is larger than the sum of its proper divisors (16836668).

20306116 is a wasteful number, since it uses less digits than its factorization.

20306116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20306116 is about 4506.2307974626. The cubic root of 20306116 is about 272.8196333510.

Adding to 20306116 its reverse (61160302), we get a palindrome (81466418).

The spelling of 20306116 in words is "twenty million, three hundred six thousand, one hundred sixteen".