18005282 has 4 divisors (see below), whose sum is σ = 27007926. Its totient is φ = 9002640.

The previous prime is 18005279. The next prime is 18005287. The reversal of 18005282 is 28250081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28250081 = 67 ⋅421643.

It can be written as a sum of positive squares in only one way, i.e., 10817521 + 7187761 = 3289^2 + 2681^2 .

It is not an unprimeable number, because it can be changed into a prime (18005287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4501319 + ... + 4501322.

Almost surely, 2^18005282 is an apocalyptic number.

18005282 is a deficient number, since it is larger than the sum of its proper divisors (9002644).

18005282 is an equidigital number, since it uses as much as digits as its factorization.

18005282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002643.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18005282 is about 4243.2631311292. The cubic root of 18005282 is about 262.0997716473.

The spelling of 18005282 in words is "eighteen million, five thousand, two hundred eighty-two".