20105214 has 16 divisors (see below), whose sum is σ = 40358928. Its totient is φ = 6676992.

The previous prime is 20105201. The next prime is 20105221. The reversal of 20105214 is 41250102.

It is a junction number, because it is equal to n+sod(n) for n = 20105193 and 20105202.

It is a congruent number.

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, 4387 + ... + 7710.

It is an arithmetic number, because the mean of its divisors is an integer number (2522433).

Almost surely, 2^20105214 is an apocalyptic number.

20105214 is an abundant number, since it is smaller than the sum of its proper divisors (20253714).

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

20105214 is a wasteful number, since it uses less digits than its factorization.

20105214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20105214 is about 4483.8838075936. The cubic root of 20105214 is about 271.9169206333.

Adding to 20105214 its reverse (41250102), we get a palindrome (61355316).

The spelling of 20105214 in words is "twenty million, one hundred five thousand, two hundred fourteen".