1328218 has 4 divisors (see below), whose sum is σ = 1992330. Its totient is φ = 664108.

The previous prime is 1328213. The next prime is 1328219. The reversal of 1328218 is 8128231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 393129 = 967^2 + 627^2 .

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1328192 and 1328201.

It is not an unprimeable number, because it can be changed into a prime (1328213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332053 + ... + 332056.

2^1328218 is an apocalyptic number.

1328218 is a deficient number, since it is larger than the sum of its proper divisors (664112).

1328218 is an equidigital number, since it uses as much as digits as its factorization.

1328218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664111.

The product of its digits is 768, while the sum is 25.

The square root of 1328218 is about 1152.4834055204. The cubic root of 1328218 is about 109.9233074235.

The spelling of 1328218 in words is "one million, three hundred twenty-eight thousand, two hundred eighteen".