18207282 has 32 divisors (see below), whose sum is σ = 38995200. Its totient is φ = 5650128.

The previous prime is 18207257. The next prime is 18207307. The reversal of 18207282 is 28270281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18207257) and next prime (18207307).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5373 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (1218600).

Almost surely, 2^18207282 is an apocalyptic number.

18207282 is an abundant number, since it is smaller than the sum of its proper divisors (20787918).

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

18207282 is a wasteful number, since it uses less digits than its factorization.

18207282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 18207282 is about 4266.9991797515. Note that the first 3 decimals coincide. The cubic root of 18207282 is about 263.0762885475.

The spelling of 18207282 in words is "eighteen million, two hundred seven thousand, two hundred eighty-two".