18032248 has 32 divisors (see below), whose sum is σ = 36867600. Its totient is φ = 8218368.

The previous prime is 18032239. The next prime is 18032249. The reversal of 18032248 is 84223081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18032249) 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, 7588 + ... + 9676.

Almost surely, 2^18032248 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 18032248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18433800).

18032248 is an abundant number, since it is smaller than the sum of its proper divisors (18835352).

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

18032248 is a wasteful number, since it uses less digits than its factorization.

18032248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18032248 is about 4246.4394497037. The cubic root of 18032248 is about 262.2305528437.

The spelling of 18032248 in words is "eighteen million, thirty-two thousand, two hundred forty-eight".