18282286 has 16 divisors (see below), whose sum is σ = 31218048. Its totient is φ = 7948600.

The previous prime is 18282283. The next prime is 18282289. The reversal of 18282286 is 68228281.

It is an interprime number because it is at equal distance from previous prime (18282283) and next prime (18282289).

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 7 ways as a sum of consecutive naturals, for example, 17560 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (1951128).

Almost surely, 2^18282286 is an apocalyptic number.

18282286 is the 2286-th centered heptagonal number.

18282286 is a deficient number, since it is larger than the sum of its proper divisors (12935762).

18282286 is a wasteful number, since it uses less digits than its factorization.

18282286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36167.

The product of its digits is 24576, while the sum is 37.

The square root of 18282286 is about 4275.7789933531. The cubic root of 18282286 is about 263.4370369025.

It can be divided in two parts, 1828 and 2286, that added together give a palindrome (4114).

The spelling of 18282286 in words is "eighteen million, two hundred eighty-two thousand, two hundred eighty-six".