18306448 has 10 divisors (see below), whose sum is σ = 35468774. Its totient is φ = 9153216.

The previous prime is 18306419. The next prime is 18306451. The reversal of 18306448 is 84460381.

It can be written as a sum of positive squares in only one way, i.e., 17740944 + 565504 = 4212^2 + 752^2 .

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, 572061 + ... + 572092.

Almost surely, 2^18306448 is an apocalyptic number.

It is an amenable number.

18306448 is a deficient number, since it is larger than the sum of its proper divisors (17162326).

18306448 is a wasteful number, since it uses less digits than its factorization.

18306448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144161 (or 1144155 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 18306448 is about 4278.6035104926. The cubic root of 18306448 is about 263.5530392387.

The spelling of 18306448 in words is "eighteen million, three hundred six thousand, four hundred forty-eight".