18297308 has 6 divisors (see below), whose sum is σ = 32020296. Its totient is φ = 9148652.

The previous prime is 18297283. The next prime is 18297313. The reversal of 18297308 is 80379281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2287160 + ... + 2287167.

It is an arithmetic number, because the mean of its divisors is an integer number (5336716).

Almost surely, 2^18297308 is an apocalyptic number.

It is an amenable number.

18297308 is a deficient number, since it is larger than the sum of its proper divisors (13722988).

18297308 is a wasteful number, since it uses less digits than its factorization.

18297308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574331 (or 4574329 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 18297308 is about 4277.5352716255. The cubic root of 18297308 is about 263.5091698912.

The spelling of 18297308 in words is "eighteen million, two hundred ninety-seven thousand, three hundred eight".