18189248 has 56 divisors (see below), whose sum is σ = 45012864. Its totient is φ = 7084800.

The previous prime is 18189247. The next prime is 18189257. The reversal of 18189248 is 84298181.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18189247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3083 + ... + 6773.

Almost surely, 2^18189248 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 18189248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22506432).

18189248 is an abundant number, since it is smaller than the sum of its proper divisors (26823616).

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

18189248 is a wasteful number, since it uses less digits than its factorization.

18189248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3711 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 18189248 is about 4264.8854615335. The cubic root of 18189248 is about 262.9894023401.

The spelling of 18189248 in words is "eighteen million, one hundred eighty-nine thousand, two hundred forty-eight".