18273282 has 16 divisors (see below), whose sum is σ = 37146432. Its totient is φ = 5991120.

The previous prime is 18273263. The next prime is 18273319. The reversal of 18273282 is 28237281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24598 + ... + 25329.

It is an arithmetic number, because the mean of its divisors is an integer number (2321652).

Almost surely, 2^18273282 is an apocalyptic number.

18273282 is an abundant number, since it is smaller than the sum of its proper divisors (18873150).

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

18273282 is a wasteful number, since it uses less digits than its factorization.

18273282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49993.

The product of its digits is 10752, while the sum is 33.

The square root of 18273282 is about 4274.7259561286. The cubic root of 18273282 is about 263.3937823448.

The spelling of 18273282 in words is "eighteen million, two hundred seventy-three thousand, two hundred eighty-two".