20206106 has 4 divisors (see below), whose sum is σ = 30309162. Its totient is φ = 10103052.

The previous prime is 20206097. The next prime is 20206129. The reversal of 20206106 is 60160202.

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., 15405625 + 4800481 = 3925^2 + 2191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051525 + ... + 5051528.

Almost surely, 2^20206106 is an apocalyptic number.

20206106 is a deficient number, since it is larger than the sum of its proper divisors (10103056).

20206106 is a wasteful number, since it uses less digits than its factorization.

20206106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103055.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20206106 is about 4495.1202431081. The cubic root of 20206106 is about 272.3710064787.

Adding to 20206106 its reverse (60160202), we get a palindrome (80366308).

The spelling of 20206106 in words is "twenty million, two hundred six thousand, one hundred six".