18288336 has 80 divisors (see below), whose sum is σ = 54282240. Its totient is φ = 5247360.

The previous prime is 18288329. The next prime is 18288341. The reversal of 18288336 is 63388281.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18288294 and 18288303.

It is a congruent number.

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, 9121 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (678528).

Almost surely, 2^18288336 is an apocalyptic number.

18288336 is a gapful number since it is divisible by the number (16) 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 18288336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27141120).

18288336 is an abundant number, since it is smaller than the sum of its proper divisors (35993904).

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

18288336 is a wasteful number, since it uses less digits than its factorization.

18288336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864 (or 1858 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 18288336 is about 4276.4864082562. The cubic root of 18288336 is about 263.4660926836.

The spelling of 18288336 in words is "eighteen million, two hundred eighty-eight thousand, three hundred thirty-six".