18055328 has 12 divisors (see below), whose sum is σ = 35546490. Its totient is φ = 9027648.

The previous prime is 18055327. The next prime is 18055333. The reversal of 18055328 is 82355081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13162384 + 4892944 = 3628^2 + 2212^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 564229 = 18055328 / (1 + 8 + 0 + 5 + 5 + 3 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 18055294 and 18055303.

It is not an unprimeable number, because it can be changed into a prime (18055327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282083 + ... + 282146.

Almost surely, 2^18055328 is an apocalyptic number.

It is an amenable number.

18055328 is a deficient number, since it is larger than the sum of its proper divisors (17491162).

18055328 is an equidigital number, since it uses as much as digits as its factorization.

18055328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564239 (or 564231 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 18055328 is about 4249.1561515200. The cubic root of 18055328 is about 262.3423839889.

The spelling of 18055328 in words is "eighteen million, fifty-five thousand, three hundred twenty-eight".