20106194 has 4 divisors (see below), whose sum is σ = 30159294. Its totient is φ = 10053096.

The previous prime is 20106187. The next prime is 20106217. The reversal of 20106194 is 49160102.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 877969 = 4385^2 + 937^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5026547 + ... + 5026550.

Almost surely, 2^20106194 is an apocalyptic number.

20106194 is a deficient number, since it is larger than the sum of its proper divisors (10053100).

20106194 is a wasteful number, since it uses less digits than its factorization.

20106194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053099.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20106194 is about 4483.9930865246. The cubic root of 20106194 is about 271.9213386291.

Adding to 20106194 its reverse (49160102), we get a palindrome (69266296).

The spelling of 20106194 in words is "twenty million, one hundred six thousand, one hundred ninety-four".