20109214 has 4 divisors (see below), whose sum is σ = 30163824. Its totient is φ = 10054606.

The previous prime is 20109211. The next prime is 20109227. The reversal of 20109214 is 41290102.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20109191 and 20109200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027302 + ... + 5027305.

It is an arithmetic number, because the mean of its divisors is an integer number (7540956).

Almost surely, 2^20109214 is an apocalyptic number.

20109214 is a deficient number, since it is larger than the sum of its proper divisors (10054610).

20109214 is a wasteful number, since it uses less digits than its factorization.

20109214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054609.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20109214 is about 4484.3298272986. The cubic root of 20109214 is about 271.9349523664.

Adding to 20109214 its reverse (41290102), we get a palindrome (61399316).

The spelling of 20109214 in words is "twenty million, one hundred nine thousand, two hundred fourteen".