1320345528 has 96 divisors (see below), whose sum is σ = 3549465360. Its totient is φ = 407833600.

The previous prime is 1320345503. The next prime is 1320345539. The reversal of 1320345528 is 8255430231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7376143 + ... + 7376321.

Almost surely, 2^1320345528 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 1320345528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774732680).

1320345528 is an abundant number, since it is smaller than the sum of its proper divisors (2229119832).

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

1320345528 is a wasteful number, since it uses less digits than its factorization.

1320345528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1320345528 is about 36336.5591106258. The cubic root of 1320345528 is about 1097.0570169967.

Adding to 1320345528 its reverse (8255430231), we get a palindrome (9575775759).

The spelling of 1320345528 in words is "one billion, three hundred twenty million, three hundred forty-five thousand, five hundred twenty-eight".