18282285 has 48 divisors (see below), whose sum is σ = 36581376. Its totient is φ = 8273664.

The previous prime is 18282283. The next prime is 18282289. The reversal of 18282285 is 58228281.

It is a happy number.

It is not a de Polignac number, because 18282285 - 2¹ = 18282283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18282283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39777 + ... + 40233.

It is an arithmetic number, because the mean of its divisors is an integer number (762112).

Almost surely, 2^18282285 is an apocalyptic number.

18282285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18282285 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

18282285 is a wasteful number, since it uses less digits than its factorization.

18282285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 599 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 18282285 is about 4275.7788764154. The cubic root of 18282285 is about 263.4370320994.

The spelling of 18282285 in words is "eighteen million, two hundred eighty-two thousand, two hundred eighty-five".