18215282 has 8 divisors (see below), whose sum is σ = 27342576. Its totient is φ = 9101092.

The previous prime is 18215257. The next prime is 18215291. The reversal of 18215282 is 28251281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1733 + ... + 6279.

It is an arithmetic number, because the mean of its divisors is an integer number (3417822).

Almost surely, 2^18215282 is an apocalyptic number.

18215282 is a deficient number, since it is larger than the sum of its proper divisors (9127294).

18215282 is a wasteful number, since it uses less digits than its factorization.

18215282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552.

The product of its digits is 2560, while the sum is 29.

The square root of 18215282 is about 4267.9365037451. The cubic root of 18215282 is about 263.1148134655.

The spelling of 18215282 in words is "eighteen million, two hundred fifteen thousand, two hundred eighty-two".