20522206 has 8 divisors (see below), whose sum is σ = 31305240. Its totient is φ = 10087128.

The previous prime is 20522197. The next prime is 20522207. The reversal of 20522206 is 60222502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522207) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 86841 + ... + 87076.

It is an arithmetic number, because the mean of its divisors is an integer number (3913155).

Almost surely, 2^20522206 is an apocalyptic number.

20522206 is a deficient number, since it is larger than the sum of its proper divisors (10783034).

20522206 is a wasteful number, since it uses less digits than its factorization.

20522206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173978.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20522206 is about 4530.1441478169. The cubic root of 20522206 is about 273.7839684571.

Adding to 20522206 its reverse (60222502), we get a palindrome (80744708).

The spelling of 20522206 in words is "twenty million, five hundred twenty-two thousand, two hundred six".