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18316 = 2219241
BaseRepresentation
bin100011110001100
3221010101
410132030
51041231
6220444
7104254
oct43614
927111
1018316
1112841
12a724
13844c
146964
155661
hex478c

18316 has 12 divisors (see below), whose sum is σ = 33880. Its totient is φ = 8640.

The previous prime is 18313. The next prime is 18329. The reversal of 18316 is 61381.

18316 = T109 + T110 + T111.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18293 and 18302.

It is not an unprimeable number, because it can be changed into a prime (18311) 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, 45 + ... + 196.

218316 is an apocalyptic number.

18316 is the 111-st centered triangular number.

It is an amenable number.

18316 is a deficient number, since it is larger than the sum of its proper divisors (15564).

18316 is a wasteful number, since it uses less digits than its factorization.

18316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 18316 is about 135.3366173657. The cubic root of 18316 is about 26.3598870465.

Adding to 18316 its reverse (61381), we get a palindrome (79697).

The spelling of 18316 in words is "eighteen thousand, three hundred sixteen".

Divisors: 1 2 4 19 38 76 241 482 964 4579 9158 18316