1328604 has 24 divisors (see below), whose sum is σ = 3160080. Its totient is φ = 434304.

The previous prime is 1328603. The next prime is 1328611. The reversal of 1328604 is 4068231.

It is a happy number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3⁴ + 2 + 8 + 6⁷ + 0 + 4¹⁰ .

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409 + ... + 1680.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2^1328604 is an apocalyptic number.

It is an amenable number.

1328604 is an abundant number, since it is smaller than the sum of its proper divisors (1831476).

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

1328604 is a wasteful number, since it uses less digits than its factorization.

1328604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1328604 is about 1152.6508578056. The cubic root of 1328604 is about 109.9339548441.

The spelling of 1328604 in words is "one million, three hundred twenty-eight thousand, six hundred four".