18256066 has 8 divisors (see below), whose sum is σ = 28574784. Its totient is φ = 8731140.

The previous prime is 18256057. The next prime is 18256081. The reversal of 18256066 is 66065281.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198390 + ... + 198481.

It is an arithmetic number, because the mean of its divisors is an integer number (3571848).

Almost surely, 2^18256066 is an apocalyptic number.

18256066 is a deficient number, since it is larger than the sum of its proper divisors (10318718).

18256066 is a wasteful number, since it uses less digits than its factorization.

18256066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396896.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 18256066 is about 4272.7117852717. The cubic root of 18256066 is about 263.3110383660.

The spelling of 18256066 in words is "eighteen million, two hundred fifty-six thousand, sixty-six".