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20227 = 113179
BaseRepresentation
bin100111100000011
31000202011
410330003
51121402
6233351
7112654
oct47403
930664
1020227
1114219
12b857
13928c
14752b
155ed7
hex4f03

20227 has 4 divisors (see below), whose sum is σ = 20520. Its totient is φ = 19936.

The previous prime is 20219. The next prime is 20231. The reversal of 20227 is 72202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20227 - 23 = 20219 is a prime.

It is a Duffinian number.

20227 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (20287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24 + ... + 202.

It is an arithmetic number, because the mean of its divisors is an integer number (5130).

220227 is an apocalyptic number.

20227 is a deficient number, since it is larger than the sum of its proper divisors (293).

20227 is a wasteful number, since it uses less digits than its factorization.

20227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 20227 is about 142.2216579850. The cubic root of 20227 is about 27.2464855328.

Adding to 20227 its reverse (72202), we get a palindrome (92429).

The spelling of 20227 in words is "twenty thousand, two hundred twenty-seven", and thus it is an iban number.

Divisors: 1 113 179 20227