20650112 has 64 divisors (see below), whose sum is σ = 49531200. Its totient is φ = 8377344.

The previous prime is 20650099. The next prime is 20650127. The reversal of 20650112 is 21105602.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20650112² = 852854251225088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16418 + ... + 17630.

It is an arithmetic number, because the mean of its divisors is an integer number (773925).

Almost surely, 2^20650112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20650112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24765600).

20650112 is an abundant number, since it is smaller than the sum of its proper divisors (28881088).

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

20650112 is a wasteful number, since it uses less digits than its factorization.

20650112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20650112 is about 4544.2394303117. The cubic root of 20650112 is about 274.3515830562.

Adding to 20650112 its reverse (21105602), we get a palindrome (41755714).

The spelling of 20650112 in words is "twenty million, six hundred fifty thousand, one hundred twelve".