1328307344 has 80 divisors (see below), whose sum is σ = 3269790720. Its totient is φ = 508515840.

The previous prime is 1328307307. The next prime is 1328307389. The reversal of 1328307344 is 4437038231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30422 + ... + 59850.

It is an arithmetic number, because the mean of its divisors is an integer number (40872384).

Almost surely, 2^1328307344 is an apocalyptic number.

1328307344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328307344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634895360).

1328307344 is an abundant number, since it is smaller than the sum of its proper divisors (1941483376).

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

1328307344 is a wasteful number, since it uses less digits than its factorization.

1328307344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29488 (or 29482 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1328307344 is about 36445.9509959611. The cubic root of 1328307344 is about 1099.2577207107.

The spelling of 1328307344 in words is "one billion, three hundred twenty-eight million, three hundred seven thousand, three hundred forty-four".