18485248 has 26 divisors (see below), whose sum is σ = 36974174. Its totient is φ = 9240576.

The previous prime is 18485191. The next prime is 18485249. The reversal of 18485248 is 84258481.

It can be written as a sum of positive squares in only one way, i.e., 9437184 + 9048064 = 3072^2 + 3008^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18485248.

It is not an unprimeable number, because it can be changed into a prime (18485249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840 + ... + 6352.

Almost surely, 2^18485248 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 18485248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18487087).

18485248 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18485248 is an frugal number, since it uses more digits than its factorization.

18485248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537 (or 4515 counting only the distinct ones).

The product of its digits is 81920, while the sum is 40.

The square root of 18485248 is about 4299.4474063535. The cubic root of 18485248 is about 264.4083060462.

It can be divided in two parts, 184852 and 48, that added together give a square (184900 = 430²).

The spelling of 18485248 in words is "eighteen million, four hundred eighty-five thousand, two hundred forty-eight".