328618 has 4 divisors (see below), whose sum is σ = 492930. Its totient is φ = 164308.

The previous prime is 328591. The next prime is 328619. The reversal of 328618 is 816823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816823 = 7 ⋅116689.

It can be written as a sum of positive squares in only one way, i.e., 328329 + 289 = 573^2 + 17^2 .

It is not an unprimeable number, because it can be changed into a prime (328619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82153 + ... + 82156.

2³²⁸⁶¹⁸ is an apocalyptic number.

328618 is a deficient number, since it is larger than the sum of its proper divisors (164312).

328618 is a wasteful number, since it uses less digits than its factorization.

328618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164311.

The product of its digits is 2304, while the sum is 28.

The square root of 328618 is about 573.2521260318. The cubic root of 328618 is about 69.0076306061.

It can be divided in two parts, 328 and 618, that added together give a triangular number (946 = T₄₃).

The spelling of 328618 in words is "three hundred twenty-eight thousand, six hundred eighteen".