18855248 has 20 divisors (see below), whose sum is σ = 36911700. Its totient is φ = 9329664.

The previous prime is 18855247. The next prime is 18855253. The reversal of 18855248 is 84255881.

18855248 = 392² + 393² + ... + 488².

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14807104 + 4048144 = 3848^2 + 2012^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18855247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4523 + ... + 7626.

It is an arithmetic number, because the mean of its divisors is an integer number (1845585).

Almost surely, 2^18855248 is an apocalyptic number.

It is an amenable number.

18855248 is a deficient number, since it is larger than the sum of its proper divisors (18056452).

18855248 is a wasteful number, since it uses less digits than its factorization.

18855248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12254 (or 12248 counting only the distinct ones).

The product of its digits is 102400, while the sum is 41.

The square root of 18855248 is about 4342.2630044713. The cubic root of 18855248 is about 266.1607937318.

The spelling of 18855248 in words is "eighteen million, eight hundred fifty-five thousand, two hundred forty-eight".