20109110 has 24 divisors (see below), whose sum is σ = 42107040. Its totient is φ = 6894384.

The previous prime is 20109109. The next prime is 20109119. The reversal of 20109110 is 1190102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20030 + ... + 21009.

It is an arithmetic number, because the mean of its divisors is an integer number (1754460).

Almost surely, 2^20109110 is an apocalyptic number.

20109110 is an abundant number, since it is smaller than the sum of its proper divisors (21997930).

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

20109110 is a wasteful number, since it uses less digits than its factorization.

20109110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41060 (or 41053 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 20109110 is about 4484.3182313480. The cubic root of 20109110 is about 271.9344835716.

Adding to 20109110 its reverse (1190102), we get a palindrome (21299212).

The spelling of 20109110 in words is "twenty million, one hundred nine thousand, one hundred ten".