20205227 has 16 divisors (see below), whose sum is σ = 24879360. Its totient is φ = 16021152.

The previous prime is 20205223. The next prime is 20205259. The reversal of 20205227 is 72250202.

It is not a de Polignac number, because 20205227 - 2² = 20205223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20205199 and 20205208.

It is not an unprimeable number, because it can be changed into a prime (20205223) 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 15 ways as a sum of consecutive naturals, for example, 3953 + ... + 7485.

It is an arithmetic number, because the mean of its divisors is an integer number (1554960).

Almost surely, 2^20205227 is an apocalyptic number.

20205227 is a deficient number, since it is larger than the sum of its proper divisors (4674133).

20205227 is a wasteful number, since it uses less digits than its factorization.

20205227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20205227 is about 4495.0224693543. The cubic root of 20205227 is about 272.3670568873.

Adding to 20205227 its reverse (72250202), we get a palindrome (92455429).

The spelling of 20205227 in words is "twenty million, two hundred five thousand, two hundred twenty-seven".