18240908 has 12 divisors (see below), whose sum is σ = 36481872. Its totient is φ = 7817520.

The previous prime is 18240907. The next prime is 18240919. The reversal of 18240908 is 80904281.

It is a happy number.

18240908 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18240907) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 325703 + ... + 325758.

It is an arithmetic number, because the mean of its divisors is an integer number (3040156).

Almost surely, 2^18240908 is an apocalyptic number.

It is an amenable number.

18240908 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.

18240908 is a wasteful number, since it uses less digits than its factorization.

18240908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651472 (or 651470 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18240908 is about 4270.9376019792. The cubic root of 18240908 is about 263.2381425245.

The spelling of 18240908 in words is "eighteen million, two hundred forty thousand, nine hundred eight".