1323379328 has 48 divisors (see below), whose sum is σ = 2662124010. Its totient is φ = 655280640.

The previous prime is 1323379327. The next prime is 1323379357. The reversal of 1323379328 is 8239733231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1319723584 + 3655744 = 36328^2 + 1912^2 .

It is not an unprimeable number, because it can be changed into a prime (1323379327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5537033 + ... + 5537271.

Almost surely, 2^1323379328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323379328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331062005).

1323379328 is an abundant number, since it is smaller than the sum of its proper divisors (1338744682).

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

1323379328 is an frugal number, since it uses more digits than its factorization.

1323379328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 422 counting only the distinct ones).

The product of its digits is 163296, while the sum is 41.

The square root of 1323379328 is about 36378.2809929221. The cubic root of 1323379328 is about 1097.8966218864.

The spelling of 1323379328 in words is "one billion, three hundred twenty-three million, three hundred seventy-nine thousand, three hundred twenty-eight".