18006274 has 48 divisors (see below), whose sum is σ = 33203520. Its totient is φ = 7250880.

The previous prime is 18006259. The next prime is 18006277. The reversal of 18006274 is 47260081.

It is not an unprimeable number, because it can be changed into a prime (18006277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107739 + ... + 107905.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^18006274 is an apocalyptic number.

18006274 is a deficient number, since it is larger than the sum of its proper divisors (15197246).

18006274 is a wasteful number, since it uses less digits than its factorization.

18006274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18006274 is about 4243.3800206911. The cubic root of 18006274 is about 262.1045850163.

The spelling of 18006274 in words is "eighteen million, six thousand, two hundred seventy-four".