18072908 has 24 divisors (see below), whose sum is σ = 36658944. Its totient is φ = 7635600.

The previous prime is 18072893. The next prime is 18072911. The reversal of 18072908 is 80927081.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 2558 + ... + 6533.

It is an arithmetic number, because the mean of its divisors is an integer number (1527456).

Almost surely, 2^18072908 is an apocalyptic number.

It is an amenable number.

18072908 is an abundant number, since it is smaller than the sum of its proper divisors (18586036).

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

18072908 is a wasteful number, since it uses less digits than its factorization.

18072908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173 (or 9171 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 18072908 is about 4251.2242942475. The cubic root of 18072908 is about 262.4275016721.

Adding to 18072908 its reverse (80927081), we get a palindrome (98999989).

The spelling of 18072908 in words is "eighteen million, seventy-two thousand, nine hundred eight".