18063328 has 48 divisors (see below), whose sum is σ = 37255680. Its totient is φ = 8611200.

The previous prime is 18063293. The next prime is 18063341. The reversal of 18063328 is 82336081.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 18063328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129883 + ... + 130021.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^18063328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18063328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18627840).

18063328 is an abundant number, since it is smaller than the sum of its proper divisors (19192352).

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

18063328 is a wasteful number, since it uses less digits than its factorization.

18063328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18063328 is about 4250.0974106484. The cubic root of 18063328 is about 262.3811247081.

The spelling of 18063328 in words is "eighteen million, sixty-three thousand, three hundred twenty-eight".