20706227 has 8 divisors (see below), whose sum is σ = 21358080. Its totient is φ = 20064520.

The previous prime is 20706209. The next prime is 20706239. The reversal of 20706227 is 72260702.

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

It is a cyclic number.

It is not a de Polignac number, because 20706227 - 2¹⁰ = 20705203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20706196 and 20706205.

It is not an unprimeable number, because it can be changed into a prime (20706247) 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 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (2669760).

Almost surely, 2^20706227 is an apocalyptic number.

20706227 is a deficient number, since it is larger than the sum of its proper divisors (651853).

20706227 is an equidigital number, since it uses as much as digits as its factorization.

20706227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20706227 is about 4550.4095420083. The cubic root of 20706227 is about 274.5998676659.

Adding to 20706227 its reverse (72260702), we get a palindrome (92966929).

The spelling of 20706227 in words is "twenty million, seven hundred six thousand, two hundred twenty-seven".