18648328 has 8 divisors (see below), whose sum is σ = 34965630. Its totient is φ = 9324160.

The previous prime is 18648319. The next prime is 18648353. The reversal of 18648328 is 82384681.

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 5673924 = 3602^2 + 2382^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165513 + ... + 1165528.

Almost surely, 2^18648328 is an apocalyptic number.

It is an amenable number.

18648328 is a deficient number, since it is larger than the sum of its proper divisors (16317302).

18648328 is a wasteful number, since it uses less digits than its factorization.

18648328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331047 (or 2331043 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 18648328 is about 4318.3709891578. The cubic root of 18648328 is about 265.1835822967.

The spelling of 18648328 in words is "eighteen million, six hundred forty-eight thousand, three hundred twenty-eight".