18247648 has 24 divisors (see below), whose sum is σ = 37488528. Its totient is φ = 8726784.

The previous prime is 18247643. The next prime is 18247661. The reversal of 18247648 is 84674281.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18247648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18247643) 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, 11661 + ... + 13132.

It is an arithmetic number, because the mean of its divisors is an integer number (1562022).

Almost surely, 2^18247648 is an apocalyptic number.

It is an amenable number.

18247648 is an abundant number, since it is smaller than the sum of its proper divisors (19240880).

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

18247648 is a wasteful number, since it uses less digits than its factorization.

18247648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24826 (or 24818 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 18247648 is about 4271.7265830107. The cubic root of 18247648 is about 263.2705606220.

The spelling of 18247648 in words is "eighteen million, two hundred forty-seven thousand, six hundred forty-eight".