18051304 has 8 divisors (see below), whose sum is σ = 33846210. Its totient is φ = 9025648.

The previous prime is 18051289. The next prime is 18051317. The reversal of 18051304 is 40315081.

It can be written as a sum of positive squares in only one way, i.e., 17892900 + 158404 = 4230^2 + 398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18051304² = 651699152200832, which contains 22 as substring.

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, 1128199 + ... + 1128214.

Almost surely, 2^18051304 is an apocalyptic number.

It is an amenable number.

18051304 is a deficient number, since it is larger than the sum of its proper divisors (15794906).

18051304 is a wasteful number, since it uses less digits than its factorization.

18051304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256419 (or 2256415 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18051304 is about 4248.6826193539. The cubic root of 18051304 is about 262.3228930813.

Adding to 18051304 its reverse (40315081), we get a palindrome (58366385).

The spelling of 18051304 in words is "eighteen million, fifty-one thousand, three hundred four".