18272708 has 12 divisors (see below), whose sum is σ = 32015760. Its totient is φ = 9125352.

The previous prime is 18272701. The next prime is 18272731. The reversal of 18272708 is 80727281.

It is not an unprimeable number, because it can be changed into a prime (18272701) 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, 1835 + ... + 6317.

It is an arithmetic number, because the mean of its divisors is an integer number (2667980).

Almost surely, 2^18272708 is an apocalyptic number.

It is an amenable number.

18272708 is a deficient number, since it is larger than the sum of its proper divisors (13743052).

18272708 is a wasteful number, since it uses less digits than its factorization.

18272708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506 (or 5504 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18272708 is about 4274.6588167946. The cubic root of 18272708 is about 263.3910244090.

Adding to 18272708 its reverse (80727281), we get a palindrome (98999989).

The spelling of 18272708 in words is "eighteen million, two hundred seventy-two thousand, seven hundred eight".