20618112 has 32 divisors (see below), whose sum is σ = 54767880. Its totient is φ = 6872576.

The previous prime is 20618107. The next prime is 20618123. The reversal of 20618112 is 21181602.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26463 + ... + 27230.

Almost surely, 2^20618112 is an apocalyptic number.

It is an amenable number.

20618112 is an abundant number, since it is smaller than the sum of its proper divisors (34149768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20618112 is an equidigital number, since it uses as much as digits as its factorization.

20618112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53710 (or 53698 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 20618112 is about 4540.7171239794. The cubic root of 20618112 is about 274.2097954568.

Adding to 20618112 its reverse (21181602), we get a palindrome (41799714).

The spelling of 20618112 in words is "twenty million, six hundred eighteen thousand, one hundred twelve".