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20182 = 210091
BaseRepresentation
bin100111011010110
31000200111
410323112
51121212
6233234
7112561
oct47326
930614
1020182
1114188
12b81a
139256
1474d8
155ea7
hex4ed6

20182 has 4 divisors (see below), whose sum is σ = 30276. Its totient is φ = 10090.

The previous prime is 20177. The next prime is 20183. The reversal of 20182 is 28102.

Adding to 20182 its reverse (28102), we get a palindrome (48284).

It can be divided in two parts, 20 and 182, that added together give a palindrome (202).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28102 = 214051.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5044 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (7569).

220182 is an apocalyptic number.

20182 is a deficient number, since it is larger than the sum of its proper divisors (10094).

20182 is a wasteful number, since it uses less digits than its factorization.

20182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10093.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20182 is about 142.0633661434. The cubic root of 20182 is about 27.2262649988.

The spelling of 20182 in words is "twenty thousand, one hundred eighty-two".

Divisors: 1 2 10091 20182