18012064 has 48 divisors (see below), whose sum is σ = 40836096. Its totient is φ = 7660800.

The previous prime is 18012047. The next prime is 18012067. The reversal of 18012064 is 46021081.

It is not an unprimeable number, because it can be changed into a prime (18012067) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42574 + ... + 42994.

It is an arithmetic number, because the mean of its divisors is an integer number (850752).

Almost surely, 2^18012064 is an apocalyptic number.

18012064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18012064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20418048).

18012064 is an abundant number, since it is smaller than the sum of its proper divisors (22824032).

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

18012064 is a wasteful number, since it uses less digits than its factorization.

18012064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18012064 is about 4244.0622050107. The cubic root of 18012064 is about 262.1326756494.

The spelling of 18012064 in words is "eighteen million, twelve thousand, sixty-four".