18445248 has 84 divisors (see below), whose sum is σ = 54628288. Its totient is φ = 5944320.

The previous prime is 18445201. The next prime is 18445253. The reversal of 18445248 is 84254481.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 17340 + ... + 18372.

Almost surely, 2^18445248 is an apocalyptic number.

18445248 is a gapful number since it is divisible by the number (18) 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 18445248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27314144).

18445248 is an abundant number, since it is smaller than the sum of its proper divisors (36183040).

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

18445248 is a wasteful number, since it uses less digits than its factorization.

18445248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1069 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 18445248 is about 4294.7931265662. The cubic root of 18445248 is about 264.2174516941.

The spelling of 18445248 in words is "eighteen million, four hundred forty-five thousand, two hundred forty-eight".