18063120 has 80 divisors (see below), whose sum is σ = 56817792. Its totient is φ = 4746240.

The previous prime is 18063107. The next prime is 18063131. The reversal of 18063120 is 2136081.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 17005 + ... + 18035.

Almost surely, 2^18063120 is an apocalyptic number.

18063120 is a gapful number since it is divisible by the number (10) 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 18063120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28408896).

18063120 is an abundant number, since it is smaller than the sum of its proper divisors (38754672).

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

18063120 is a wasteful number, since it uses less digits than its factorization.

18063120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18063120 is about 4250.0729405506. The cubic root of 18063120 is about 262.3801175943.

The spelling of 18063120 in words is "eighteen million, sixty-three thousand, one hundred twenty".