18007708 has 6 divisors (see below), whose sum is σ = 31513496. Its totient is φ = 9003852.

The previous prime is 18007697. The next prime is 18007723. The reversal of 18007708 is 80770081.

It is a self number, because there is not a number n which added to its sum of digits gives 18007708.

It is a congruent 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 as a sum of consecutive naturals, namely, 2250960 + ... + 2250967.

Almost surely, 2^18007708 is an apocalyptic number.

It is an amenable number.

18007708 is a deficient number, since it is larger than the sum of its proper divisors (13505788).

18007708 is a wasteful number, since it uses less digits than its factorization.

18007708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501931 (or 4501929 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 18007708 is about 4243.5489864028. The cubic root of 18007708 is about 262.1115427392. Note that the first 3 decimals are identical.

Adding to 18007708 its reverse (80770081), we get a palindrome (98777789).

The spelling of 18007708 in words is "eighteen million, seven thousand, seven hundred eight".