1328571 has 12 divisors (see below), whose sum is σ = 1964248. Its totient is φ = 864864.

The previous prime is 1328563. The next prime is 1328573. The reversal of 1328571 is 1758231.

It is not a de Polignac number, because 1328571 - 2³ = 1328563 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330 + ... + 2103.

2^1328571 is an apocalyptic number.

1328571 is a deficient number, since it is larger than the sum of its proper divisors (635677).

1328571 is a wasteful number, since it uses less digits than its factorization.

1328571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482 (or 3479 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1328571 is about 1152.6365428877. The cubic root of 1328571 is about 109.9330446530.

The spelling of 1328571 in words is "one million, three hundred twenty-eight thousand, five hundred seventy-one".