18663282 has 96 divisors (see below), whose sum is σ = 47960640. Its totient is φ = 5227200.

The previous prime is 18663257. The next prime is 18663283. The reversal of 18663282 is 28236681.

18663282 is a `hidden beast` number, since 18 + 6 + 632 + 8 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (18663283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 455182 + ... + 455222.

It is an arithmetic number, because the mean of its divisors is an integer number (499590).

Almost surely, 2^18663282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18663282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23980320).

18663282 is an abundant number, since it is smaller than the sum of its proper divisors (29297358).

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

18663282 is a wasteful number, since it uses less digits than its factorization.

18663282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 76 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 18663282 is about 4320.1020821272. The cubic root of 18663282 is about 265.2544464831.

The spelling of 18663282 in words is "eighteen million, six hundred sixty-three thousand, two hundred eighty-two".