18386328 has 16 divisors (see below), whose sum is σ = 45965880. Its totient is φ = 6128768.

The previous prime is 18386323. The next prime is 18386339. The reversal of 18386328 is 82368381.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18386321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383025 + ... + 383072.

Almost surely, 2^18386328 is an apocalyptic number.

It is an amenable number.

18386328 is an abundant number, since it is smaller than the sum of its proper divisors (27579552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18386328 is a wasteful number, since it uses less digits than its factorization.

18386328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766106 (or 766102 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 18386328 is about 4287.9281710402. The cubic root of 18386328 is about 263.9358200277.

The spelling of 18386328 in words is "eighteen million, three hundred eighty-six thousand, three hundred twenty-eight".