18065312 has 24 divisors (see below), whose sum is σ = 36715392. Its totient is φ = 8740800.

The previous prime is 18065291. The next prime is 18065321. The reversal of 18065312 is 21356081.

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 3 ways as a sum of consecutive naturals, for example, 8114 + ... + 10097.

It is an arithmetic number, because the mean of its divisors is an integer number (1529808).

Almost surely, 2^18065312 is an apocalyptic number.

It is an amenable number.

18065312 is an abundant number, since it is smaller than the sum of its proper divisors (18650080).

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

18065312 is a wasteful number, since it uses less digits than its factorization.

18065312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18252 (or 18244 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18065312 is about 4250.3308106546. The cubic root of 18065312 is about 262.3907306363.

The spelling of 18065312 in words is "eighteen million, sixty-five thousand, three hundred twelve".