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18322 = 29161
BaseRepresentation
bin100011110010010
3221010121
410132102
51041242
6220454
7104263
oct43622
927117
1018322
1112847
12a72a
138455
14696a
155667
hex4792

18322 has 4 divisors (see below), whose sum is σ = 27486. Its totient is φ = 9160.

The previous prime is 18313. The next prime is 18329. The reversal of 18322 is 22381.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16641 + 1681 = 129^2 + 41^2 .

It is a fibodiv number, since the Fibonacci-like sequence with seeds 18 and 322 contains 18322 itself.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 18296 and 18305.

It is not an unprimeable number, because it can be changed into a prime (18329) by changing a digit.

18322 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 4579 + ... + 4582.

218322 is an apocalyptic number.

18322 is a deficient number, since it is larger than the sum of its proper divisors (9164).

18322 is an equidigital number, since it uses as much as digits as its factorization.

18322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9163.

The product of its digits is 96, while the sum is 16.

The square root of 18322 is about 135.3587825004. The cubic root of 18322 is about 26.3627650777.

The spelling of 18322 in words is "eighteen thousand, three hundred twenty-two".

Divisors: 1 2 9161 18322