20806126 has 8 divisors (see below), whose sum is σ = 34046424. Its totient is φ = 9457320.

The previous prime is 20806117. The next prime is 20806127. The reversal of 20806126 is 62160802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20806126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20806127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472845 + ... + 472888.

It is an arithmetic number, because the mean of its divisors is an integer number (4255803).

Almost surely, 2^20806126 is an apocalyptic number.

20806126 is a deficient number, since it is larger than the sum of its proper divisors (13240298).

20806126 is a wasteful number, since it uses less digits than its factorization.

20806126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945746.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20806126 is about 4561.3732581318. The cubic root of 20806126 is about 275.0407697130.

Adding to 20806126 its reverse (62160802), we get a palindrome (82966928).

The spelling of 20806126 in words is "twenty million, eight hundred six thousand, one hundred twenty-six".