20109130 has 64 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 6994944.

The previous prime is 20109119. The next prime is 20109137. The reversal of 20109130 is 3190102.

It is not an unprimeable number, because it can be changed into a prime (20109137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144601 + ... + 144739.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^20109130 is an apocalyptic number.

20109130 is an abundant number, since it is smaller than the sum of its proper divisors (21259190).

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

20109130 is a wasteful number, since it uses less digits than its factorization.

20109130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 20109130 is about 4484.3204613408. The cubic root of 20109130 is about 271.9345737246.

Adding to 20109130 its reverse (3190102), we get a palindrome (23299232).

The spelling of 20109130 in words is "twenty million, one hundred nine thousand, one hundred thirty".