Search a number
BaseRepresentation
bin100011010011011
3220210110
410122123
51034300
6215403
7103461
oct43233
926713
1018075
1112642
12a563
1382c5
146831
155550
hex469b

18075 has 12 divisors (see below), whose sum is σ = 30008. Its totient is φ = 9600.

The previous prime is 18061. The next prime is 18077. The reversal of 18075 is 57081.

It is a happy number.

18075 is digitally balanced in base 3 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 18075 - 24 = 18059 is a prime.

It is a Duffinian number.

18075 is strictly pandigital in base 6.

It is a plaindrome in base 16.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46 + ... + 195.

218075 is an apocalyptic number.

18075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18075 is a deficient number, since it is larger than the sum of its proper divisors (11933).

18075 is a wasteful number, since it uses less digits than its factorization.

18075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 18075 is about 134.4432965975. The cubic root of 18075 is about 26.2437626904.

The spelling of 18075 in words is "eighteen thousand, seventy-five".

Divisors: 1 3 5 15 25 75 241 723 1205 3615 6025 18075