18276 has 12 divisors (see below), whose sum is σ = 42672. Its totient is φ = 6088.

The previous prime is 18269. The next prime is 18287. The reversal of 18276 is 67281.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is an unprimeable number.

18276 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 in 3 ways as a sum of consecutive naturals, for example, 750 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (3556).

2¹⁸²⁷⁶ is an apocalyptic number.

18276 is the 86-th centered pentagonal number.

It is an amenable number.

18276 is an abundant number, since it is smaller than the sum of its proper divisors (24396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21336).

18276 is a wasteful number, since it uses less digits than its factorization.

18276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1528 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 18276 is about 135.1887569290. The cubic root of 18276 is about 26.3406840915.

The spelling of 18276 in words is "eighteen thousand, two hundred seventy-six".