18298216 has 16 divisors (see below), whose sum is σ = 36115200. Its totient is φ = 8667504.

The previous prime is 18298213. The next prime is 18298289. The reversal of 18298216 is 61289281.

It is not an unprimeable number, because it can be changed into a prime (18298213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60040 + ... + 60343.

It is an arithmetic number, because the mean of its divisors is an integer number (2257200).

Almost surely, 2^18298216 is an apocalyptic number.

It is an amenable number.

18298216 is a deficient number, since it is larger than the sum of its proper divisors (17816984).

18298216 is a wasteful number, since it uses less digits than its factorization.

18298216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120408 (or 120404 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 18298216 is about 4277.6414061957. The cubic root of 18298216 is about 263.5135286812.

The spelling of 18298216 in words is "eighteen million, two hundred ninety-eight thousand, two hundred sixteen".