1328071407 has 32 divisors (see below), whose sum is σ = 1943917248. Its totient is φ = 801570816.

The previous prime is 1328071373. The next prime is 1328071411. The reversal of 1328071407 is 7041708231.

It is a happy number.

It is not a de Polignac number, because 1328071407 - 2¹⁰ = 1328070383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328071417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548263 + ... + 550679.

It is an arithmetic number, because the mean of its divisors is an integer number (60747414).

Almost surely, 2^1328071407 is an apocalyptic number.

1328071407 is a deficient number, since it is larger than the sum of its proper divisors (615845841).

1328071407 is a wasteful number, since it uses less digits than its factorization.

1328071407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1328071407 is about 36442.7140454714. The cubic root of 1328071407 is about 1099.1926326302.

Adding to 1328071407 its reverse (7041708231), we get a palindrome (8369779638).

The spelling of 1328071407 in words is "one billion, three hundred twenty-eight million, seventy-one thousand, four hundred seven".