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18268 = 224567
BaseRepresentation
bin100011101011100
3221001121
410131130
51041033
6220324
7104155
oct43534
927047
1018268
11127a8
12a6a4
138413
14692c
15562d
hex475c

18268 has 6 divisors (see below), whose sum is σ = 31976. Its totient is φ = 9132.

The previous prime is 18257. The next prime is 18269. The reversal of 18268 is 86281.

18268 is nontrivially palindromic in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280 + ... + 2287.

218268 is an apocalyptic number.

It is an amenable number.

18268 is a deficient number, since it is larger than the sum of its proper divisors (13708).

18268 is a wasteful number, since it uses less digits than its factorization.

18268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571 (or 4569 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 18268 is about 135.1591654310. The cubic root of 18268 is about 26.3368401390.

The spelling of 18268 in words is "eighteen thousand, two hundred sixty-eight".

Divisors: 1 2 4 4567 9134 18268